1. Yu.A.Dovgalyuk, N. E.Veremey, S. A. Vladimirov, et al., Trudy Glavnoi Geofiz. Obs., No. 562, 7 (2010).
2. E. L.Kogan, I.P.Mazin, B.N. Sergeev, and V. I.Khvorost’yanov, Numerical Simulation of Clouds [in Russian], Moscow (1984), p. 186.
3. G. V. Kupovykh, B.A.Ashabokov, M.N. Beytuganov, et al., Izv. Vyssh. Ucheb. Zaved. Sev. Kavkaz. Region, No. 6, 65 (2012).