KRAJEWSKA, Anna. Impact of Tax System in Poland, Transition Economies and the European Union on Competitiveness of the Economy. Comparative Economic Research. Central and Eastern Europe, Poland, v. 7, n. 1-2, p. 105–119, 2004. DOI: 10.18778/1508-2008.7.05. Disponível em: https://www.czasopisma.uni.lodz.pl/CER/article/view/30055. Acesso em: 10 aug. 2026.