STACHURA, Michał, WIECZOREK, Dariusz and ZIELIŃSKI, Artur. An attempt at a typology of karst lakes in the Połaniec Basin (Małopolska Upland). Bulletin of Geography. Physical Geography Series. Online. 19 December 2018. No. 15, pp. 63-74. [Accessed 21 January 2025]. DOI 10.2478/bgeo-2018-0016.