Himelbrant, D. E., I. S. Stepanchikova, J. Motiejūnaitė, L. V. Gagarina, and A. V. Dyomina. “New Records of Lichens and Allied Fungi from the Leningrad Region, Russia. VII”. Folia Cryptogamica Estonica, Vol. 53, Oct. 2016, pp. 25-34, doi:10.12697/fce.2016.53.04.