BIERNACKI, K. Tax Incentives in Polish Pension System. Economic and Environmental Studies, [S. l.], v. 17, n. 1 (41), p. 115–125, 2020. Disponível em: https://czasopisma.uni.opole.pl/index.php/ees/article/view/2721. Acesso em: 16 apr. 2025.