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Popov, E.V. & Grigoriev, M.A. & Volkov, A.V. (2001)
About first records of the Jurassic sharks teeth (Chondrichthyes, Elasmobranchii) from the Volga River Basin, Russia. “Research results from SRGI and Geological Faculty of SSU”: Transactions of the Scientific Research Geological Institute of the N. G. Tchernyshevsky Saratov State University. New series. Saratov: "Scientific Book" Publishing, Vol. VII. P. 5–18. 7 figs. [In Russian with English summary and explanations of figures]