1. E. S. Bikbulatov, Yu. M. Lebedev, A. S. Litvinov, et al., “Hydrochemical Characteristic of the Upper Volga Reservoirs during Mean Water Period in 1997,” Vodnye Resursy, 28, No. 5, 606–614 (2001).
2. V. I. Burenkov, Yu. A. Gol’din, V. A. Artem’ev, and S. V. Sheberstov, “Optic Characteristics of the Caspian Waters Based on the Ship’s and Satellite Obesrvations,” Okeanologiya, 50, No. 5, 716–729 (2010).
3. N. V. Butorin, Hydrological Processes and Dynamics of Water Masses in Reservoirs of the Volga Cascade (Nauka, Leningrad, 1969).
4. B. A. Gureev, Yu. A. Gol’din, and Yu. I. Ventskut, in Comprehensive Studies of the World Ocean — a Project “Meridian”, the Atlantic Ocean (Nauka, Moscow, 2008), pp. 189–195 [in Russian].
5. Remote Diagnostics of the Ocean (IPF AN SSSR, Gor’kii, 1987) [in Russian].