Chądzyńska, Elżbieta. “The Conversions of the City Structure and Their Influence on the Demographic Phenomena”. Bulletin of Geography. Socio-economic Series, no. 15 (May 19, 2011): 143–154. Accessed April 26, 2024. https://apcz.umk.pl/BGSS/article/view/v10089-011-0010-0.