Template:Ippolitov & Gulyaev, 2013b
- Ippolitov, A. P. & Gulyaev, D.B. 2013. Belemnite stratigraphy of the Lower Callovian of south-west of Western Europe platform: preliminary results. Jurassic System of Russia: Problems of stratigraphy and рaleogeography. Fifth All‐Russian meeting. September 23-27, 2013, Tyumen. Scientific materials. (V.A.Zakharov (ch. ed.), M.A.Rogov, B.N.Shurygin (eds.). Yekaterinburg: “ID “IzdatNaukaServis” LLC, 2013. pp. 85–89. PDF