Tarasova, V., Androsova, V., Sonina, A., & Ahti, T. (2015). The lichens from the City of Petrozavodsk in the Herbarium of the Botanical Museum, University of Helsinki. Folia Cryptogamica Estonica, 52, 41–50. https://doi.org/10.12697/fce.2015.52.06