Nikiforova, K.V.; Aleksandrova, L.P.; Trubikhin, V.M.; Chepalyga, A.L. 1986. Korrelazya pliozenovikh i eopleystozenovikh otlozhenii yuga evropeyskoy chasti SSSR i SRR. In: Kontinentalny Verkhny Pliozen Chernomorsko-Kaspiyskogoy Oblasti – Sbornik Statey. AN SSSR, Ordena Trudovogo Krasn. Znam., Geol. Inst., Moskva. pp. 5-17.
Nikiforova, K.V.; Alekseeva, L.I.; Lamakin, V.V.; Gerbova, V.G.; et al. 1959. The stratigraphic scale of Quaternary deposits of the USSR and principles of their correlation with foreign (material to the problem). Moskva, Akademya Nauk SSSR, Trudy Geologicheskogo In-ta, Vyp. 32, Izd-vo Akademya Nauk SSSR. pp. 1-193.






