Fojcik, Barbara, and Adam Stebel. “Chosen Aspects of Threatened Moss Species Occurrence in Urban Areas - a Case Study of Katowice”. Biodiversity: Research and Conservation, no. 1-2 (June 30, 2006): 187–189. Accessed January 17, 2026. https://pressto.amu.edu.pl/index.php/biorc/article/view/42218.