MIERZEJEWSKA, Lidia; PARYSEK, Jerzy J. Regional differences in the age structure of Poland’s population in the years 1999–2010: a multivariate approach. Bulletin of Geography. Socio-economic Series, [S. l.], n. 19, p. 61–72, 2013. DOI: 10.1515/bog-2013-0004. Disponível em: https://apcz.umk.pl/BGSS/article/view/bog-2013-0004. Acesso em: 10 jan. 2025.