Szulc, Adam Piotr, and Marcin Wiśniewski. “New Records of Protected, Threatened, and Rare Vascular Plant Species in the Lower Bug Valley (eastern Poland)”. Biodiversity: Research and Conservation 74 (June 30, 2024): 17–30. Accessed September 27, 2024. https://pressto.amu.edu.pl/index.php/biorc/article/view/43667.