KRZYSZKOWSKI, Jerzy. Increasing importance of social services in the times of demographic challenge. Acta Universitatis Lodziensis. Folia Oeconomica, [S. l.], v. 2, n. 312, 2016. Disponível em: https://czasopisma.uni.lodz.pl/foe/article/view/397. Acesso em: 13 mar. 2025.