Bąk, I., Spoz, A. and Zioło, M. 2025. Sustainable Development Levels and Convergence Patterns in EU Countries in 2015, 2019 and 2023. Journal for Perspectives of Economic Political and Social Integration. 31, 2 (Dec. 2025), 309–337. DOI:https://doi.org/10.18290/pepsi-2025-0025.