Kluza, Krzysztof, and Marzanna Poniatowicz. “Reshaping Fiscal Federalism: Adaptive Responses in the Era of Polycrisis – Empirical Evidence from European Countries”. Comparative Economic Research. Central and Eastern Europe 29, no. 3 (September 25, 2026): 61–93. Accessed September 27, 2026. https://www.czasopisma.uni.lodz.pl/CER/article/view/30663.