JASTRZĘBSKA, Ewa; LEGUTKO-KOBUS, Paulina. Initiatives for people aged 50+ implemented by municipalities and enterprises in the Opole special demographic zone. Economics and Environment, Poland, v. 68, n. 1, p. 11, 2019. Disponível em: https://ekonomiaisrodowisko.pl/journal/article/view/111.. Acesso em: 26 dec. 2024.