Biernacki, Krzysztof. “TAX SYSTEM COMPETITION – INSTRUMENTS AND BENEFICIARIES”. Ekonomia i Prawo. Economics and Law 13, no. 2 (June 30, 2014): 275–284. Accessed July 27, 2024. https://apcz.umk.pl/EiP/article/view/EiP.2014.020.