Template:Ippolitov & Gulyaev, 2014a
- Ippolitov, A. P. & Gulyaev, D.B. 2014. Belemnite stratigraphy of the Lower Callovian of the East European Platform: application of infrazonal stratigraphy concept. 4th International Palaeontological Congress, Mendoza, Argentina. The history of life: A view from the Southern Hemisphere. Abstract volume. pp. 540. PDF