Tuzhikova,V.I. (1973)
Lithology and stratigraphy of the Lower Mesozoic deposits of the Urals. (In: The history of the Lower Mesozoic accumulation of Coals in the Urals) [ Litologo-Stratigraficheskii Ocherk Nizhnemezozoisk Ikh otlozhenii Urala (In-Istoriya Nizhemezozoiosko Uglenakopleniya na Urale) ] Trudy Uralskii Nauchnyi Tsentralnykh,Instituta Geologii i Geokhimii,Akademiya Nauk SSR
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