Popov, E.V. & Seltzer, V.B. & Volkov, A.V. (2004)
On records of the elasmobranchs teeth (Chondrichthyes: Elasmobranchii) from the lower Callovian of Russia. Questions of Upper Paleozoic and Mesozoic paleontology and stratigraphy, Transactions of the Scientific Research Geological Institute of the N. G. Chernyshevskii Saratov State University, 16: 133–154