1.
PARYSEK, Jerzy J. & MIERZEJEWSKA, Lidia. Trajectories of the demographic development of Poland after 1989. Bulletin of Geography. Socio-economic Series [online]. 29 June 2012, nr 17, s. 109–115. [accessed 7.12.2021]. DOI 10.1515/v10089-012-0011-7.