Wierzbicka, Wioletta, Aleksandra Nierobisz, and Maciej Sobiecki. “Stability of Tax Revenue in Poland’s National Budget in 2004-2020”. Olsztyn Economic Journal 16, no. 1 (November 30, 2021): 87–100. Accessed November 21, 2024. https://czasopisma.uwm.edu.pl/index.php/oej/article/view/7313.