Dyupina,G.V. (1970)
Acritarchs of terrigenous deposits in the Lower Permian of the northern Urals. (In: Upper Paleozoic Terrigenous Deposits of the Urals.) [ Akritarckhi Terrigennykh otlozhenii Nizhnei Permi Crednego Urala. (In: Verkhne Paleozoiskie Terrigennye Otlozheniya Urala.) ] Trudy Institut Geologiya i Geokhimiya Goryuchikh,Uralskii Filial,Akademiya Nauk SSR
Vol. 88 P. 47- 59