STEPANCHIKOVA, I. S.; ANDREEV, M. P.; HIMELBRANT, D. E.; MOTIEJŪNAITĖ, J.; SCHIEFELBEIN, U.; KONOREVA, L. A.; AHTI, T. The lichens of Bolshoy Tuters Island (Tytärsaari), Leningrad Region, Russia. Folia Cryptogamica Estonica, v. 54, p. 95-116, 13 Sep. 2017.