ŻUKOWSKI, Maciej. Two Waves of Pension Reforms in Cee Countries 1998-2012. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 1, n. 1, p. s. 91–100, 2013. DOI: 10.18559/9rn4sf89. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3141. Acesso em: 3 sep. 2026.