Himelbrant, Dmitry E. “The Lichens and Allied Fungi from the Leningrad Region and Saint Petersburg in the Lichen Herbarium of the University of Tartu”. Folia Cryptogamica Estonica 53 (October 3, 2016): 35–42. Accessed April 26, 2024. https://ojs.utlib.ee/index.php/FCE/article/view/fce.2016.53.05.