Himelbrant, Dmitry, Jurga Motiejūnaitė, Juha Pykälä, Ulf Schiefelbein, and Irina Stepanchikova. “New Records of Lichens and Allied Fungi from the Leningrad Region, Russia. IV”. Folia Cryptogamica Estonica 50 (1): 23-31. Accessed December 8, 2019. http://ojs.utlib.ee/index.php/FCE/article/view/fce.2013.50.04.