1. Cretaceous system. Upper series;Alekseev,1989
2. Lithology and micropalaeontology of Cenomanian–Turonian boundary beds of south-western Crimea;Alekseev,1997
3. Cenomanian–Turonian boundary interval in the south-western Crimea;Alekseev;Byull. Mosk. Obshch. Ispyt. Prir. Otd. Geol.,2007
4. The Upper Cretaceous of the Southern Part of the USSR,1986
5. Geology of the Ukrainian Shelf (Shelf and Coasts of the Black Sea);Astakhova,1984