Authors Year Title
Librovitch 1939 Kamennougol'nye otlozheniia raionov r. Shartymkii verkhovii r. Urala.   [The Carboniferous of the Schartym River and the upper Ural region].
Trudy tsentralnogo nautchno-issledovatel'skogo geologo-razvedochnogo instituta (TsNIGRI), vypusk 114: 1-43,1 skhema, Leningrad, Moskva.