Himelbrant, D. E., I. S. Stepanchikova, J. Motiejūnaitė, E. S. Kuznetsova, G. Tagirdzhanova, and I. V. Frolov. “New Records of Lichens and Allied Fungi from the Leningrad Region, Russia. X”. Folia Cryptogamica Estonica, Vol. 56, June 2019, pp. 23-29, doi:10.12697/fce.2019.56.04.