SZYMAŃSKA, D.; GRZELAK-KOSTULSKA, E.; HOŁOWIECKA, B. Polish Towns and the Changes in Their Areas and Population Densities. Bulletin of Geography. Socio-economic Series, [S. l.], n. 11, p. 15–29, 2009. DOI: 10.1515/v10089-008-0018-2. Disponível em: https://apcz.umk.pl/BGSS/article/view/v10089-008-0018-2. Acesso em: 18 jan. 2022.