1. V. I. Vernadsky, History of Natural Waters (Nauka, Moscow, 2003) [in Russian].
2. H. Schoeller, Géochemie des eaux souterraines (Paris, 1965).
3. A. M. Ovchinnikov, Hydrogeochemistry (Nedra, Moscow, 1970) [in Russian].
4. E. V. Posokhov, General Hydrogeochemistry (Nedra, Leningrad, 1975) [in Russian].
5. V. S. Samarina, Hydrogeochemistry (Leningrad. Gos. Univ., Leningrad, 1977) [in Russian].