OCIEPA-KICIŃSKA, Elżbieta. Diversification of the risk and reducing Open Pension Funds in the investment policy. The Scientific Journal European Policies, Finance and Marketing, [S. l.], n. 4(53), p. 332–340, 2010. DOI: 10.22630/PEFIM.2010.4.53.70. Disponível em: https://pefim.sggw.edu.pl/article/view/1518. Acesso em: 10 nov. 2026.