KUBIAK-WÓJCICKA, Katarzyna, BRÓZDA, Sławomir and SZNAJDER, Agnieszka. Hydrographic changes in a river system and their influence on the legal classification of watercourses, exemplified by selected tributaries of the San river. Bulletin of Geography. Physical Geography Series. Online. 23 January 2017. No. 12, pp. 5-17. [Accessed 26 March 2026]. DOI 10.1515/bgeo-2017-0001.