Lindholm, W. A. (1932). Presnovodnyye mollyuski iz pliotsenovykh otlozheniy po r. Irtyshu (Yugo-Zapadnaya Sibir') [Freshwater mollusks from the Pliocene deposits of the Irtysh River (SW Siberia)]. Trudy Vsesoyuznogo geologo-razvedochnogo ob'edineniya NKTP SSSR. 239: 3–27.
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Lindholm, W. A.
1932
Presnovodnyye mollyuski iz pliotsenovykh otlozheniy po r. Irtyshu (Yugo-Zapadnaya Sibir') [Freshwater mollusks from the Pliocene deposits of the Irtysh River (SW Siberia)]
Trudy Vsesoyuznogo geologo-razvedochnogo ob’edineniya NKTP SSSR
