Himelbrant, Dmitry E., Irina S. Stepanchikova, Ekaterina S. Kuznetsova, Jurga Motiejūnaitė, and Ludmila A. Konoreva. 2018. “Konevets Island (Leningrad Region, Russia) – a Historical Refuge of Lichen Diversity in Lake Ladoga”. Folia Cryptogamica Estonica 55 (June):51-78. https://doi.org/10.12697/fce.2018.55.07.