	Authors	Year	Title
	Kulagina, Nikolaeva & Akhmetshina	2006	The Dombar Limestone in the South Urals and the Viséan-Serpukhovian boundary. [E.I.Kulagina, S.V.Nikolaeva, L.Z.Akhmetshina, G.F.Zainakaeva, V.A.Konovalova, V.F.Korobkov & A.N.Kan]. Newsletter on Carboniferous Stratigraphy, 24: 9-11, 2 fig.
	Popov	1975	Ammonoidea (Ammonoidei). In: Paleontologicheskii Atlas kamennougol'nykh otlozhenii Urala. [In Russian]. Trudy VNIGRI 383: 111-130, pls.35-44, Leningrad (Nedra).