Central European Business Review 2026, 15(4) | DOI: 10.18267/j.cebr.427

The Role of Economic Performance and Resource Efficiency in European Sustainable Business

Monica Laura Zlati ORCID...1, Costinela Fortea ORCID...2, Valentin Marian Antohi ORCID...1, Nicoleta Barbuta – Misu ORCID...1, Puiu Lucian Georgescu ORCID...3
1 Dunarea de Jos University of Galati, Faculty of Economics and Business Administration, Department of Business Administration, Romania
2 Dunarea de Jos University of Galati, Faculty of Economics and Business Administration, Department of Business Administration, Romania / Transilvania University of Brasov, Romania, Department of Finance, Accounting and Economic Theory
3 Dunarea de Jos University of Galati, REXDAN Research Infrastructure, Romania

This study examines the structural dimensions associated with research and development investment across European Union countries through an integrated econometric framework encompassing economic performance, efficiency dynamics, environmental pressures, policy orientation, and digital transformation. Moving beyond single-indicator approaches, the analysis constructs composite indices reflecting structural innovation capacity, resource and energy efficiency, green transition pressures, fiscal and policy orientation, and digital business transformation. Using panel data for EU Member States over the period 2013-2023, the empirical strategy combines hierarchical pooled regression with country fixed-effects and two-way fixed-effects models using Driscoll-Kraay standard errors, thereby accounting for unobserved country heterogeneity, common year effects, and cross-sectional dependence. Pooled estimates show strong positive associations of structural innovation capacity and green transition pressures with BERD across variation that combines between-country differences and within-country changes. These relationships differ when estimation is based on within-country variation and when common year effects are incorporated. In the two-way fixed-effects specification with Driscoll-Kraay inference, resource and energy efficiency and green transition pressures are positively associated with BERD, whereas digital business transformation is negatively associated with BERD; structural innovation capacity and fiscal-policy orientation are not statistically significant. These results distinguish relationships observed across pooled country-year variation from those identified through within-country changes and show that some coefficient patterns differ further after common year effects are incorporated. By providing a multidimensional perspective on the structural dimensions associated with business R&D intensity, the study contributes to the literature on sustainable innovation and provides policy-relevant evidence on the distinct roles of structural conditions, efficiency dynamics, environmental pressures, and digital transformation.

Keywords: research and development investment, structural capacity, environmental pressures, resource and energy efficiency, sustainable innovation, European Union
JEL classification: M2, O3, Q01

Received: November 15, 2025; Revised: September 18, 2026; Accepted: October 20, 2026; Prepublished online: October 29, 2026; Published: October 31, 2026  Show citation

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Zlati, M.L., Fortea, C., Antohi, V.M., Barbuta – Misu, N., & Georgescu, P.L. (2026). The Role of Economic Performance and Resource Efficiency in European Sustainable Business. Central European Business Review, 15(4), . doi: 10.18267/j.cebr.427
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References

  1. Agostino, M., Rondinella, S., & Succurro, M. (2026). Green innovation and firm efficiency: The role of institutional quality in Italian high-tech manufacturing sectors. Business Strategy and the Environment, 35(6), 7867-7885. https://doi.org/10.1002/bse.70533 Go to original source...
  2. Al Amosh, H. (2026). From either or to superior more: CEO paradox mindset as a catalyst for high-quality ambidextrous innovation. European Journal of Innovation Management, 29(4), 1096-1121. https://doi.org/10.1108/EJIM-05-2025-0600 Go to original source...
  3. Alabani, K., Afful, B., Taale, F., & Abokyi, E. (2026). Assessing the performance of national innovation systems (NIS) in Sub-Saharan Africa. Discover Global Society, 4(1), Article 43. https://doi.org/10.1007/s44282-026-00368-9 Go to original source...
  4. Alinda, K., Nalukenge, I., Kaawaase, T. K., Kiconco, M., Agaba, D., & Ssebaale, M. (2026). Institutional pressures and environmental innovation as drivers of sustainable transformation in Ugandan manufacturing sector. Discover Environment, 4(1), Article 181. https://doi.org/10.1007/s44274-026-00693-5 Go to original source...
  5. Andrei, M., & Johnsson, S. (2025). Advancing maturity in the adoption of digital technologies for energy efficiency in manufacturing industry. Journal of Manufacturing Technology Management, 36(9), 114-133. https://doi.org/10.1108/JMTM-09-2024-0482 Go to original source...
  6. Awode, S. S., & Oduola, M. O. (2025). The interplay between technological innovation and human capital development in driving industrial productivity and competitiveness in Africa. Journal of Economics and Development, 27(1), 56-71. https://doi.org/10.1108/JED-03-2024-0079 Go to original source...
  7. Bambi, P. D. R., & Pea-Assounga, J. B. B. (2025). Unraveling the interplay of research investment, educational attainment, human capital development, and economic advancement in technological innovation: A panel VAR approach. Education and Information Technologies, 30(3), 3309-3341. https://doi.org/10.1007/s10639-024-12938-y Go to original source...
  8. Barra, C., & Falcone, P. M. (2026). Institutional factors and environmental performance: Insights from global economies. Economic Systems, 50(2), Article 101364. https://doi.org/10.1016/j.ecosys.2025.101364 Go to original source...
  9. Bigerna, S., D'Errico, M. C., & Polinori, P. (2025). The role of EU structural and investment funds in the green transition: A stochastic ray frontier analysis. Economic Analysis and Policy, 87, 689-709. https://doi.org/10.1016/j.eap.2025.06.011 Go to original source...
  10. Brodny, J., & Tutak, M. (2024). A multi-criteria measurement and assessment of human capital development in EU-27 countries: A 10-year perspective. Journal of Open Innovation: Technology, Market, and Complexity, 10(4), Article 100394. https://doi.org/10.1016/j.joitmc.2024.100394 Go to original source...
  11. Calvo, N., Monje-Amor, A., & Villarreal, O. (2022). When your value proposition is to improve others' energy efficiency: Analyzing the internationalization dilemma of eco-innovations in SMEs. Technological Forecasting and Social Change, 185, Article 122069. https://doi.org/10.1016/j.techfore.2022.122069 Go to original source...
  12. Cardillo, M. A. dos R., & Basso, L. F. C. (2025). Revisiting knowledge on ESG/CSR and financial performance: A bibliometric and systematic review of moderating variables. Journal of Innovation & Knowledge, 10(1), Article 100648. https://doi.org/10.1016/j.jik.2024.100648 Go to original source...
  13. Casadella, V., & Tahi, S. (2025). Inclusive national innovation systems: Rethinking institutions in the light of inclusion imperatives. Journal of Institutional Economics, 21, Article e2. https://doi.org/10.1017/S1744137425000025 Go to original source...
  14. Chahdoura, A., Khefacha, I., & Mrabet, N. (2026). Impact of technology entrepreneurship on the growth quality index: A dynamic panel ARDL approach. The International Journal of Entrepreneurship and Innovation. Advance online publication. https://doi.org/10.1177/14657503261440804 Go to original source...
  15. Cheng, S.-Y., Yu, C.-P., & Hou, H. (2026). Financial innovation and economic development: Evidence from different stages of financial development. The Manchester School, 94(1), 1-23. https://doi.org/10.1111/manc.70004 Go to original source...
  16. Coca, P., García-Domínguez, A., & Claver, J. (2026). Regulatory feedback and adaptive constraints in publicly funded R&D project management systems: A multicriteria decision analysis. Systems, 14(2), Article 135. https://doi.org/10.3390/systems14020135 Go to original source...
  17. Coelho, C., Neves, C., & Cruz-Jesus, F. (2025). Exploring the EU sustainability divide: Analyzing disparities in climate investments. Energy Policy, 206, Article 114701. https://doi.org/10.1016/j.enpol.2025.114701 Go to original source...
  18. Crucitti, F., Lecca, P., Monfort, P., & Salotti, S. (2025). Short and longer-term effects of European regional policy. Economic Analysis and Policy, 86, 1748-1765. https://doi.org/10.1016/j.eap.2025.04.036 Go to original source...
  19. Dai, J., Mehmood, U., & Nassani, A. A. (2025). Empowering sustainability through energy efficiency, green innovations, and the sharing economy: Insights from G7 economies. Energy, 318, Article 134768. https://doi.org/10.1016/j.energy.2025.134768 Go to original source...
  20. Dai, J., Phan Ah Kiaw, J., & Yap Tat Hiung, E. (2025). Is some uncertainty better than none? Nonlinear relationships between climate policy uncertainty and corporate green performance. International Review of Economics & Finance, 102, Article 104336. https://doi.org/10.1016/j.iref.2025.104336 Go to original source...
  21. de Costa, R., Ferrara, I., Toplak, M., Alam, A., Bowie, R., & Burnett, A. (2025). Behavioural insights and environmental sustainability: Key findings and policy implications from a systematic review. Journal of Environmental Management, 390, Article 126118. https://doi.org/10.1016/j.jenvman.2025.126118 Go to original source...
  22. de las Heras-Rosas, C., Herrera-Ballesteros, J., Veiga, P. M., & Rodrigues, R. S. (2026). Company location, business environment and digital maturity as drivers of environmental innovation in business. Business Strategy and the Environment, 35(5), 7398-7419. https://doi.org/10.1002/bse.70539 Go to original source...
  23. Duan, Y., Yang, M., Liu, H., & Chin, T. (2024). How does digital transformation affect innovation in knowledge-intensive business services firms? The moderating effect of R&D collaboration portfolio. Journal of Knowledge Management, 28(4), 994-1019. https://doi.org/10.1108/JKM-02-2023-0161 Go to original source...
  24. European Commission. (2023a). The European Green Deal. https://commission.europa.eu/strategy-and-policy/priorities-2019-2024/european-green-deal_en
  25. European Commission. (2023b). Circular economy action plan. https://environment.ec.europa.eu/strategy/circular-economy-action-plan_en
  26. European Commission. (2024). Horizon Europe. https://research-and-innovation.ec.europa.eu/funding/funding-opportunities/funding-programmes-and-open-calls/horizon-europe_en
  27. European Commission. (2025, December 22). EU companies increase research and development investments in key sectors [Press release]. https://ec.europa.eu/commission/presscorner/detail/en/ip_25_3119
  28. European Union. (2024). The future of European competitiveness: In-depth analysis and recommendations (Part B). https://commission.europa.eu/document/download/ec1409c1-d4b4-4882-8bdd-3519f86bbb92_en
  29. Eurostat. (2025a). Broadband internet coverage by speed [Data set]. https://ec.europa.eu/eurostat/databrowser/view/isoc_cbs/default/table?lang=en
  30. Eurostat. (2025b). Greenhouse gas emissions by source sector [Data set]. https://ec.europa.eu/eurostat/databrowser/view/env_air_gge/default/table?lang=en
  31. Eurostat. (2025c). Investments in climate change mitigation by NACE Rev. 2 activity [Data set]. https://ec.europa.eu/eurostat/databrowser/view/env_ac_ccminv/default/table?lang=en
  32. Eurostat. (2025d). Resource productivity [Data set]. https://ec.europa.eu/eurostat/databrowser/view/cei_pc030/default/table?lang=en
  33. Eurostat. (2026a). Business enterprise expenditure on R&D (BERD) [Data set]. https://ec.europa.eu/eurostat/databrowser/view/rd_e_berdindr2/default/table?lang=en
  34. Eurostat. (2026b). E-commerce sales of enterprises by NACE Rev. 2 activity [Data set]. https://ec.europa.eu/eurostat/databrowser/view/ISOC_EC_ESELN2__custom_4480547/default/table
  35. Eurostat. (2026c). Energy productivity [Data set]. https://ec.europa.eu/eurostat/databrowser/view/sdg_07_30/default/table
  36. Eurostat. (2026d). Environmental tax revenues as share of total taxes [Data set]. https://ec.europa.eu/eurostat/databrowser/view/ten00141/default/table
  37. Eurostat. (2026e). Gross fixed capital formation, current prices [Data set]. https://ec.europa.eu/eurostat/databrowser/view/teina040/default/table?lang=en&category=shorties.teieuro_na.teina_gfc
  38. Eurostat. (2026f). Internet access by size class of enterprise [Data set]. https://ec.europa.eu/eurostat/databrowser/view/isoc_ci_in_es/default/table?lang=en
  39. Eurostat. (2026g). Labour productivity and unit labour costs - annual data [Data set]. https://ec.europa.eu/eurostat/databrowser/view/nama_10_lp_ulc/default/table?lang=en
  40. Eurostat. (2026h). Municipal waste by waste management operations [Data set]. https://ec.europa.eu/eurostat/databrowser/view/env_wasmun$defaultview/default/table?lang=en
  41. Eurostat. (2026i). Primary energy consumption [Data set]. https://ec.europa.eu/eurostat/databrowser/view/sdg_07_10/default/table?lang=en
  42. Eurostat. (2026j). R&D personnel. https://ec.europa.eu/eurostat/statistics-explained/index.php?title=R%26D_personnel
  43. Eurostat. (2026k). Real GDP per capita [Data set]. https://ec.europa.eu/eurostat/databrowser/view/sdg_08_10/default/table?lang=en
  44. Eurostat. (2026l). Share of renewable energy in gross final energy consumption by sector [Data set]. https://ec.europa.eu/eurostat/databrowser/view/sdg_07_40/default/table?lang=en
  45. Eurostat. (2026m). Value of e-commerce sales by NACE Rev. 2 activity [Data set]. https://ec.europa.eu/eurostat/databrowser/view/isoc_ec_evaln2$defaultview/default/table?lang=en
  46. Faerber, L. A., Balta-Ozkan, N., & Ünal, E. (2026). Synthesised innovation drivers and barriers in the energy sector. Energy Policy, 209, Article 115002. https://doi.org/10.1016/j.enpol.2025.115002 Go to original source...
  47. Fan, Y., & Shi, L. (2025). The role of government fiscal incentives in green technological innovation: A nonlinear analytical framework. International Review of Economics & Finance, 103, Article 104529. https://doi.org/10.1016/j.iref.2025.104529 Go to original source...
  48. Fedajev, A., Kojiæ, M., Mitiæ, P., & Radulescu, M. (2025). Drivers of entrepreneurship in Europe: The role of digitalization, innovation, capital investments, unemployment, and sustainability. European Journal of Innovation Management, 28(7), 3129-3162. https://doi.org/10.1108/EJIM-04-2024-0497 Go to original source...
  49. Fragkos, P., Zisarou, E., Van De Ven, D.-J., Mittal, S., Rinaldi, L., Rocco, M., Rodés-Bachs, C., Frilingou, N., Heussaff, C., & Nikas, A. (2026). A multi-model assessment of technological constraints on Europe's energy transition. Energy Strategy Reviews, 64, Article 102164. https://doi.org/10.1016/j.esr.2026.102164 Go to original source...
  50. Fu, B. (2026). Walls of technology, cracks in employment: The labor effects of foreign technology sanctions. Technological Forecasting and Social Change, 226, Article 124617. https://doi.org/10.1016/j.techfore.2026.124617 Go to original source...
  51. Ge, H., & Zhang, X. (2025). From uncertainty to sustainability: How climate policy uncertainty shapes corporate ESG? International Review of Economics & Finance, 98, Article 104011. https://doi.org/10.1016/j.iref.2025.104011 Go to original source...
  52. Georgescu, L. P., Fortea, C., Antohi, V. M., Balsalobre-Lorente, D., Zlati, M. L., & Barbuta-Misu, N. (2025). Economic, technological and environmental drivers of the circular economy in the European Union: A panel data analysis. Environmental Sciences Europe, 37(1), Article 76. https://doi.org/10.1186/s12302-025-01119-4 Go to original source...
  53. Gomes, S., Lopes, J. M., & Nogueira, E. (2026). Charting resource efficiency practices across European firms: A multilevel analysis. Corporate Social Responsibility and Environmental Management, 33(2), 2489-2509. https://doi.org/10.1002/csr.70272 Go to original source...
  54. Gunarathne, N., & Lee, K.-H. (2021). The link between corporate energy management and environmental strategy implementation: Efficiency, sufficiency and consistency strategy perspectives. Journal of Cleaner Production, 293, Article 126082. https://doi.org/10.1016/j.jclepro.2021.126082 Go to original source...
  55. Guzman, J., Murray, F., Stern, S., & Williams, H. (2024). Accelerating innovation ecosystems: The promise and challenges of regional innovation engines. Entrepreneurship and Innovation Policy and the Economy, 3, 9-75. https://doi.org/10.1086/727744 Go to original source...
  56. Hönigsberg, S., Li, M. M., Korneeva, E., Wache, H., & Dinter, B. (2026). The impact of digital platform introduction on business models in SMEs-The interplay of efficiency and innovation orientation. The Journal of Strategic Information Systems, 35(2), Article 101967. https://doi.org/10.1016/j.jsis.2026.101967 Go to original source...
  57. International Monetary Fund. (2026). Macroeconomic developments and prospects in low-income countries-2026 (IMF Policy Paper No. 2026/005). https://doi.org/10.5089/9798229043229.007.A001 Go to original source...
  58. Jiao, H., Wang, T., Libaers, D., Yang, J., & Hu, L. (2025). The relationship between digital technologies and innovation: A review, critique, and research agenda. Journal of Innovation & Knowledge, 10(1), Article 100638. https://doi.org/10.1016/j.jik.2024.100638 Go to original source...
  59. Karagkouni, A., & Dimitriou, D. (2025). Barriers and initiatives to access international market for European cross-border regions. Economies, 13(6), Article 154. https://doi.org/10.3390/economies13060154 Go to original source...
  60. Khalique, A., Wang, Y., & Ahmed, K. (2025). Europe's environmental dichotomy: The impact of regulations, climate investments, and renewable energy on carbon mitigation in the EU-22. Energy Policy, 198, Article 114498. https://doi.org/10.1016/j.enpol.2025.114498 Go to original source...
  61. Khan, M. I., Yasmeen, T., Khan, M., Hadi, N. U., Asif, M., Farooq, M., & Al-Ghamdi, S. G. (2025). Integrating Industry 4.0 for enhanced sustainability: Pathways and prospects. Sustainable Production and Consumption, 54, 149-189. https://doi.org/10.1016/j.spc.2024.12.012 Go to original source...
  62. Kim, R. Y. (2026). Investigating techonomy: The multilevel effect of R&D investment on economic performance. The Journal of Technology Transfer, 51, 2506-2537. https://doi.org/10.1007/s10961-025-10265-z Go to original source...
  63. Klemke-Pitek, M., & Majchrzak, M. (2022). Pro-ecological activities and shaping the competitive advantage of small and medium-sized enterprises in the aspect of sustainable energy management. Energies, 15(6), Article 2192. https://doi.org/10.3390/en15062192 Go to original source...
  64. Ko¹íková, M., & Va¹anièová, P. (2025). Exploring the link between digital readiness and sustainable development: A cluster analysis of EU countries. Sustainability, 17(11), Article 5080. https://doi.org/10.3390/su17115080 Go to original source...
  65. Kumar, P., Caggiano, H., Shwom, R., Felder, F. A., & Andrews, C. J. (2025). Reflections on energy efficiency policies in sustainable transition: Bedrock, gamechanger, or more of the same? Environmental Policy and Governance, 35(6), 1028-1046. https://doi.org/10.1002/eet.70022 Go to original source...
  66. Li, Y., & Zhou, C. (2026). The role of sustainable-oriented investor penetration in enhancing corporate carbon and energy efficiency: Evidence from China. Green Technologies and Sustainability, 4(2), Article 100340. https://doi.org/10.1016/j.grets.2026.100340 Go to original source...
  67. Loaiza, F. (2026). The complementary role of human capital in innovation-driven decarbonization. Economic Analysis and Policy, 90, 1205-1219. https://doi.org/10.1016/j.eap.2026.01.066 Go to original source...
  68. López-Paredes, H., Yagüe-Perales, R. M., & March-Chorda, I. (2025). Exploring the impact of innovation on company performance in regions of intermediate development. Journal of Innovation and Entrepreneurship, 14(1), Article 126. https://doi.org/10.1186/s13731-025-00567-9 Go to original source...
  69. Luo, Y., Shang, Y., Zheng, J., & Li, H. (2025). A study of the impact of the digital economy on wellbeing eco-efficiency: Empirical evidence from G20 countries. Sustainable Futures, 10, Article 101457. https://doi.org/10.1016/j.sftr.2025.101457 Go to original source...
  70. Majid, S., Zhang, X., Khaskheli, M. B., Hong, F., King, P. J. H., & Shamsi, I. H. (2023). Eco-efficiency, environmental and sustainable innovation in recycling energy and their effect on business performance: Evidence from European SMEs. Sustainability, 15(12), Article 9465. https://doi.org/10.3390/su15129465 Go to original source...
  71. Martiny, A., Taglialatela, J., Testa, F., & Iraldo, F. (2024). Determinants of environmental social and governance (ESG) performance: A systematic literature review. Journal of Cleaner Production, 456, Article 142213. https://doi.org/10.1016/j.jclepro.2024.142213 Go to original source...
  72. Nichifor, B., Turcu, O., Zait, L., Timiras, L., & Prihoanca, D. (2026). Strategic integration of digital technologies in sustainable business models: A cross-industry comparative study. Business Strategy and the Environment, 35(2), 1970-1996. https://doi.org/10.1002/bse.70244 Go to original source...
  73. OECD. (2025a). Building beneficiary capacity under EU Cohesion Policy: A framework for action for managing authorities. https://doi.org/10.1787/c2efa2e2-en Go to original source...
  74. OECD. (2025b). Measuring science and innovation for sustainable growth. https://doi.org/10.1787/3b96cf8c-en Go to original source...
  75. OECD. (2025c). Progress in implementing the European Union coordinated plan on artificial intelligence (Vol. 1): Member States' actions. https://doi.org/10.1787/533c355d-en Go to original source...
  76. OECD. (2025d). Regional integration in the Union for the Mediterranean 2025: Progress report. https://doi.org/10.1787/6422396e-en Go to original source...
  77. OECD. (2026a). Foundations for growth and competitiveness 2026. https://doi.org/10.1787/40a7532f-en Go to original source...
  78. OECD. (2026b). Progress in implementing the European Union coordinated plan on artificial intelligence (Vol. 2): Uptake in high-impact sectors. https://doi.org/10.1787/3ac96d41-en Go to original source...
  79. Orsolin, F., Araujo, E., & Araujo, E. (2026). From innovation to structural transformation: Dynamic evidence across the global economy (2009-2023). Structural Change and Economic Dynamics, 79, 49-64. https://doi.org/10.1016/j.strueco.2026.04.006 Go to original source...
  80. Oyelakin, I. O., Ting, D. H., Yusuf, A. H., Arbak, S., & Dhar, B. K. (2025). Building resource capabilities through green servitization and ISO 14001 for sustainable performance: Perspectives from manufacturing firms. Corporate Social Responsibility and Environmental Management, 32(3), 3770-3784. https://doi.org/10.1002/csr.3150 Go to original source...
  81. Palma, G., & Scotti, F. (2025). Synergies in sustainability: Assessing the innovation effects of digital and green investments in EU Cohesion Policy. Sustainability, 17(23), Article 10446. https://doi.org/10.3390/su172310446 Go to original source...
  82. Pan, L., Sun, Z., Wang, Z., & Dong, H. (2025). Digital finance and low carbon transition of heavy polluters: A study based on the dual driving effects of supply chain stability and dynamic capabilities. Journal of Environmental Management, 394, Article 127355. https://doi.org/10.1016/j.jenvman.2025.127355 Go to original source...
  83. Pariso, P., & Marino, A. (2026). Assessing the circular economy transition in the EU: Predictive insights from an artificial neural network model. Sustainable Development, 34(S1), 538-556. https://doi.org/10.1002/sd.70163 Go to original source...
  84. Petkoviæ, S., Debarliev, S., Janeska-Iliev, A., & Kolakoviæ, M. (2025). Innovation ecosystem paradox: How strong external support weakens project management-sustainability innovation link. Sustainability, 17(22), Article 9998. https://doi.org/10.3390/su17229998 Go to original source...
  85. Pham, V. K., Phan, T. T. A., Pham Thi, T. D., & Giao, L. L. P. (2026). Managerial capability investment and innovation trajectories across industry knowledge bases: Evidence from an emerging economy. Economics of Innovation and New Technology. Advance online publication. https://doi.org/10.1080/10438599.2026.2641465 Go to original source...
  86. Premkumar, P., Sumod, S. D., Rajeev, A., & Ram Kumar, P. N. (2026). Energy and environmental efficiency: Role of institutional quality, human capital, R&D and knowledge systems. Benchmarking: An International Journal, 33(4), 1208-1235. https://doi.org/10.1108/BIJ-06-2023-0402 Go to original source...
  87. Prokop, V., Gerstlberger, W., Zapletal, D., & Gyamfi, S. (2023). Do we need human capital heterogeneity for energy efficiency and innovativeness? Insights from European catching-up territories. Energy Policy, 177, Article 113565. https://doi.org/10.1016/j.enpol.2023.113565 Go to original source...
  88. Saeedikiya, M., Salunke, S., & Kowalkiewicz, M. (2025). The nexus of digital transformation and innovation: A multilevel framework and research agenda. Journal of Innovation & Knowledge, 10(1), Article 100640. https://doi.org/10.1016/j.jik.2024.100640 Go to original source...
  89. Saud, S., Haseeb, A., Haider Zaidi, S. A., Khan, I., & Li, H. (2024). Moving towards green growth? Harnessing natural resources and economic complexity for sustainable development through the lens of the N-shaped EKC framework for the European Union. Resources Policy, 91, Article 104804. https://doi.org/10.1016/j.resourpol.2024.104804 Go to original source...
  90. ªengül, A., Pekin, S., & Alkan, U. (2025). Is financial constraint an impediment to firm's high growth? Borsa Istanbul Review, 25(6), 1137-1151. https://doi.org/10.1016/j.bir.2025.06.009 Go to original source...
  91. Singh, S., Dhir, S., Mukunda Das, V., & Sharma, A. (2025). Analyzing institutional factors influencing the national innovation system. Journal of Science and Technology Policy Management, 16(8), 1445-1466. https://doi.org/10.1108/JSTPM-05-2023-0063 Go to original source...
  92. Spilioti, N., & Anastasiou, A. (2024). European Structural and Investment Funds (ESIFs) and regional development across the European Union (EU). Journal of Risk and Financial Management, 17(6), Article 228. https://doi.org/10.3390/jrfm17060228 Go to original source...
  93. Suharman, H., Nisa, F., Pramesti, R. F., & Handoyo, S. (2026). The impact of sustainability practices on firm financial performance and market valuation: Evidence from a global panel data analysis. Sustainable Development, 34(5), 6106-6129. https://doi.org/10.1002/sd.70680 Go to original source...
  94. Sun, M., & Xu, X. (2026). Fiscal and tax incentives and the nighttime economy: The role of the digital economy. International Review of Economics & Finance, 107, Article 105132. https://doi.org/10.1016/j.iref.2026.105132 Go to original source...
  95. Tiganasu, R., & Lupu, D. (2023). Institutional quality and digitalization: Drivers in accessing European funds at regional level? Socio-Economic Planning Sciences, 90, Article 101738. https://doi.org/10.1016/j.seps.2023.101738 Go to original source...
  96. Tran, N. T., Nguyen, T. D., Nguyen, M., & Pham, P. M. H. (2025). Climate vulnerability and green innovation: A cross-country analysis. Journal of Open Innovation: Technology, Market, and Complexity, 11(2), Article 100548. https://doi.org/10.1016/j.joitmc.2025.100548 Go to original source...
  97. Tsiapa, M., Tzeremes, P. G., & Tzeremes, N. G. (2025). Productivity slowdown and regional productivity heterogeneity. Journal of Productivity Analysis, 64(1), 23-41. https://doi.org/10.1007/s11123-025-00751-9 Go to original source...
  98. Usman, M., Radulescu, M., Balsalobre-Lorente, D., & Rehman, A. (2023). Investigation on the causality relationship between environmental innovation and energy consumption: Empirical evidence from EU countries. Energy & Environment, 34(8), 3130-3159. https://doi.org/10.1177/0958305X221120931 Go to original source...
  99. Vãrzaru, A. A., & Bocean, C. G. (2024). Digital transformation and innovation: The influence of digital technologies on turnover from innovation activities and types of innovation. Systems, 12(9), Article 359. https://doi.org/10.3390/systems12090359 Go to original source...
  100. Vasconcelos-Garcia, M., & Carrilho-Nunes, I. (2024). Internationalisation and digitalisation as drivers for eco-innovation in the European Union. Structural Change and Economic Dynamics, 70, 245-256. https://doi.org/10.1016/j.strueco.2024.02.010 Go to original source...
  101. Wang, Y., Shi, M., Liu, J., Zhong, M., & Ran, R. (2025). The impact of digital-real integration on energy productivity under a multi-governance framework: The mediating role of AI and embodied technological progress. Energy Economics, 142, Article 108167. https://doi.org/10.1016/j.eneco.2024.108167 Go to original source...
  102. World Economic Forum. (2025). Fostering effective energy transition 2025. https://www.weforum.org/publications/fostering-effective-energy-transition-2025/in-full/redefining-global-energy-systems/
  103. Wu, R., & Lin, B. (2022). Environmental regulation and its influence on energy-environmental performance: Evidence on the Porter Hypothesis from China's iron and steel industry. Resources, Conservation and Recycling, 176, Article 105954. https://doi.org/10.1016/j.resconrec.2021.105954 Go to original source...
  104. Xing, Z., Fang, D., Wang, J., & Zhang, L. (2025). How does institutional theory illuminate the influence of the digital economy on R&D networks? European Journal of Innovation Management, 28(8), 3418-3439. https://doi.org/10.1108/EJIM-11-2023-0958 Go to original source...
  105. Xiong, Q., Yang, J., Zhang, X., Deng, Y., Gui, Y., & Guo, X. (2025). The influence of digital transformation on the total factor productivity of enterprises: The intermediate role of human-machine cooperation. Journal of Innovation & Knowledge, 10(4), Article 100736. https://doi.org/10.1016/j.jik.2025.100736 Go to original source...
  106. Yang, L., Zhang, Y., Huo, B., & Tian, M. (2025). The impact of digital transformation on new quality productivity: A moderating analysis based on the socio-technical system theory. Industrial Management & Data Systems, 125(12), 3179-3198. https://doi.org/10.1108/IMDS-08-2024-0767 Go to original source...
  107. Yoshino, M., Sadlek, B., Yarime, M., & Ali, A. (2025). Knowledge absorption pathways for eco-innovation: An empirical analysis of small and medium-sized enterprises in the European Union. European Journal of Innovation Management, 28(2), 426-453. https://doi.org/10.1108/EJIM-02-2023-0136 Go to original source...
  108. Zhang, W., Zhu, B., Li, Y., & Yan, D. (2024). Revisiting the Porter hypothesis: A multi-country meta-analysis of the relationship between environmental regulation and green innovation. Humanities and Social Sciences Communications, 11(1), Article 232. https://doi.org/10.1057/s41599-024-02671-9 Go to original source...
  109. Zhao, L., Chong, K. M., Gooi, L.-M., & Yan, L. (2024). Research on the impact of government fiscal subsidies and tax incentive mechanism on the output of green patents in enterprises. Finance Research Letters, 61, Article 104997. https://doi.org/10.1016/j.frl.2024.104997 Go to original source...
  110. Zhao, Q., Wu, W., Ge, Y., & Xu, J. (2025). Can intellectual property protection policy enhance enterprise innovation capability? Quasi-natural experimental study. International Review of Financial Analysis, 103, Article 104163. https://doi.org/10.1016/j.irfa.2025.104163 Go to original source...
  111. Zheng, L., Cao, Y., Umar, M., Wang, X., & Safi, A. (2025). Environmental policy, digital economy, and green innovation: Navigating the low-carbon transition in emerging seven economies. Economic Change and Restructuring, 58(4), Article 67. https://doi.org/10.1007/s10644-025-09893-0 Go to original source...

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