Demyanov, Grigory Stepanovich (1885-1908). Batalpashinsky mineral mud. Batalpashinsk: Batalpashinsky Department of the All-Russian Islands for the Development and Improvement of Russian Curative Locations, 1915.
Russian Geographical Society. The Caucasian department. Notes of the Caucasian Department of the Imperial Russian Geographical Society. Tiflis, 1852-1916. Film Sosnovsky, Dmitry Ivanovich (1886-1952). Book. 28, no. 3: Protection of natural monuments in the Caucasus. 1913.