KALBARCZYK, Małgorzata; MACKIEWICZ-ŁYZIAK, Joanna. Ageing population, physical activity, and long-term fiscal sustainability: evidence from Poland . Studia Demograficzne, [S. l.], n. 1(177), p. 107–122, 2020. DOI: 10.33119/SD.2020.1.5. Disponível em: https://econjournals.sgh.waw.pl/SD/article/view/2522. Acesso em: 19 apr. 2024.