FLAGA, Małgorzata and WESOŁOWSKA, Monika. Demographic and social degradation in the Lubelskie Voivodeship as a peripheral area of East Poland. Bulletin of Geography. Socio-economic Series. Online. 29 August 2018. Vol. 41, no. 41, pp. 7-27. [Accessed 25 December 2025]. DOI 10.2478/bog-2018-0023.