Andreev,Y.V. et al. (1981)
Stratigraphy of the Upper Proterozoic of the Russian Plate and the Western Slope of South Urals [ Stratigrafiya verkhnego Proterozoya Vostochnoi Okrainy Russkoi Plity i Zapadnogo Sklona Yuzhnogo Urala ] Izvestiya Akademii Nauk SSSR, Seriya Geologicheskaya
Vol. 1981 # 10 P. 57- 67