1. Alexandrova, L.P., Balandin, J.G., Bilinkis, G.M., Bukatchuk, P.D., Veklych, M.F., Dubinovsky, V.L., Pokatilov, V.P., Pronin, K.K., Roshka, V.K., Sirenko, N.A., Hubka, A.N., Chepalyga, A.L., Zelinsky, I.P., 1984. Guidebook of the International Geological Congress. XXVII Session. Excursion 013. Late Cenozoic Climate-Stratigraphy of the North-Western Prechernomoye. Timpul, Kishinev, 44 pp.
2. The palaeosol complex S5 in the China Loess Plateau. A record of climatic optimum during the last 1.2 Ma;An;Geojournal,1987
3. Climates of some great soil groups of the western United States;Arkley;Soil Sci.,1967
4. Atlas Ukrainskoi SSR i Moldavskoi SSR [Atlas of the Ukrainian Soviet Socialist Republic and of the Moldavian Soviet Socialist Republic], 1983. Moscow, GUGK, 69 maps (in Russian).
5. Is a Middle Pleistocene climatic optimum recorded in the loess-paleosol sequences of Eurasia?;Billard;Quat. Int.,1993