Stoykov, Dimitar. “Lichen-Forming Fungi from Rilomanadtirska Gora Reserve, Rila Mts (Bulgaria)”. Journal of BioScience and Biotechnology 9, no. 1 (July 1, 2020): 69–76. Accessed July 16, 2024. https://editorial.uni-plovdiv.bg/index.php/JBB/article/view/316.