Pogorevich, V.V. (1977). Nekotoryye nemorskiye dvustvorki uglenosnoy permi Pechorskogo basseyna [Some non-marine bivalves from the coal-bearing Permian beds of the Pechora Basin]. Trudy Instituta Geologii i Geofiziki, Sibirskoye Otdelniye, Akademiia Nauk SSSR. 345: 44-70.
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Pogorevich, V.V.
1977
Nekotoryye nemorskiye dvustvorki uglenosnoy permi Pechorskogo basseyna [Some non-marine bivalves from the coal-bearing Permian beds of the Pechora Basin]
Trudy Instituta Geologii i Geofiziki, Sibirskoye Otdelniye, Akademiia Nauk SSSR