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2. Diagnostics of two-layered sediments;Aparin;Dokuchaev Soil Bull.,1986
3. Aparin, B.F., Rubilin, E.V., 1975. Specific of Soil Formation in Two-layered Sediments of the North-Western Part of the Russian Plain. Nauka, Leningrad (In Russian).
4. Glaciomorphological Map of the Russian Federation;Astakhov;Quat. Int.,2016
5. Impact of uprooting on the soil cover;Basevich;Pochvovedenie,1979