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Anistratenko, V.V.; Kovalenko, V.A.; Prisjazhnjuk, V.A. (1991). Novyye dannyye ob iskopayemykh mollyuskakh iz srednego sarmata predkavkaz'ya [New data on fossil mollusks from middle Sarmatian of Cis-Caucasian]. Byulleten' Moskovskogo Obshchestva Ispytateley Prirody, Otdel geologicheskiy. 66(5): 99-105.