1. Amirkhanov A. M., Inashvili Ts. N., Piterans A. V., Shcherbakov V. V. 1992. [Lichen species of Red Data Book of the RSFSR in the territory of North-Ossetia Reserve]. Okhrana i izucheniye redkikh vidov rasteniy v zapovednikakh [The protection and study of rare plant species in nature reserves]. Moscow: 111–112. (In Russ.).
2. Awasthi D. D., Akhtar Y. 1977. The genus Leptogium (sect. Mallotium) in India. Norw. J. Bot. 24: 59–71.
3. Barkhalov Sh. O. 1983. Flora lishaynikov Kavkaza [Lichen flora of Caucasus]. Baku: 338 p.
4. Blinkova O. V., Urbanavichene I. N., Urbanavichus G. P. 2003. New and rare lichen species from the Caucasus (Teberdinsky Nature Reserve). Bot. Zhurn. 88(10): 115–118. (In Russ. with Engl. abstract).
5. Budaeva S. E., Kharpukhaeva T. M. 2003. New records of lichens in Buryatia. Bot. Zhurn. 88(12): 90–92. (In Russ. with Engl. abstract).