Gusev, A. K. (1954). Osobennosti razmeshcheniya i kharakter fauny peletsipod v tatarskikh otlozheniyakh verkhov'yev reki Vyatki [Features of the placement and nature of the pelecypod fauna in the Tatarian deposits of the upper reaches of the river Vyatki]. Uchenyye Zapiski Kazanskogo Gosudarstvennogo Universiteta. 114(3, geol. 21): 145-154.
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Gusev, A. K.
1954
Osobennosti razmeshcheniya i kharakter fauny peletsipod v tatarskikh otlozheniyakh verkhov'yev reki Vyatki [Features of the placement and nature of the pelecypod fauna in the Tatarian deposits of the upper reaches of the river Vyatki]