Tarasova, V., Sonina, A., Androsova, V. and Stepanchikova, I. 2015. The lichens of forest rocky communities of mountain Olovgora (Arkhangelsk Region, Northwest Russia). Folia Cryptogamica Estonica. 52, (Aug. 2015), 51–62. DOI:https://doi.org/10.12697/fce.2015.52.07.