BUSZKO, A. The threats of the shadow economy for public finance in Poland. Zeszyty Naukowe SGGW, Polityki Europejskie, Finanse i Marketing, [S. l.], n. 18(67), p. 22–29, 2017. DOI: 10.22630/PEFIM.2017.18.67.20. Disponível em: https://pefim.sggw.edu.pl/article/view/1182. Acesso em: 2 maj. 2024.