1. S. S. Andreev, Human and Environment (Izd. APSN SKHTs VSh, Rostov-on-Don, 2005) [in Russian].
2. V. M. Batova, Agroclimatic Resources of the Northern Caucasus (Gidrometeoizdat, Leningrad, 1968) [in Russian].
3. A. A. Isaev, Ecological Climatology (Nauchnyi Mir, Moscow, 2003) [in Russian].
4. I. L. Linevich and L. P. Sorokina, “Climatic Potential of the Atmosphere Self-purification; Experience in Different-scale Estimation,” Geografiya i Prirodnye Resursy, No. 4 (1992) [Geography and Natural Resources, No. 4 (1992)].
5. Scientific and Applied Handbook on the USSR Climate. Ser. 3: Multiyear Data, No. 13 (Gidrometeoizdat, Leningrad, 1990) [in Russian].