RUSSEL, Piotr. The Competitiveness of the Polish Tax System in Comparison to those in selected EU Countries. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 3, n. 2, p. s. 116–128, 2015. DOI: 10.18559/m3ckdb42. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3842. Acesso em: 3 sep. 2026.