Pangsy‑Kania, Sylwia, Justyna Biegańska, and Floros Flouros. “Alternative Fuels As a Sustainable Innovation in Vehicle Fleet Across the EU–27: Diagnosis and Prospects for Development”. Comparative Economic Research. Central and Eastern Europe 27, no. 4 (December 19, 2024): 173–194. Accessed December 8, 2025. https://czasopisma.uni.lodz.pl/CER/article/view/24396.