1. Biostratigraphy and magnetostratigraphy of the uppermost Tithonian–Lower Berriasian in the Theodosia area of Crimea (southern Ukraine);Bakhmutov;Geological Quarterly,2018
2. Bielecka, W., 1980. Upper Cretaceous, Order Foraminiferida Eichwald, 1830. In: Malinowska, L. (Ed.), Geological structure of Poland, III, Atlas of leading and characteristic fossils, 2b, Mesozoic, Jurassic. Instytut Geologiczny Warszawa, 291–328. (in Polish).
3. Biostratigraphy and facies of Upper Jurassic–Lower Cretaceous pelagic carbonate sediments (Oberalm-, Schrambach- and Roßfeld-Formation) in the Northern Calcareous Alps, South of Salzburg;Boorová;Abhandlungen der Geologischen Bundesanstalt,1999
4. Bown, P.R., Cooper, M.K.E., 1998. Jurassic. In: Bown P.R. (Ed.), Calcareous nannofossil biostratigraphy. British Micropalaeontological Society, London, 34–85.
5. Calcareous nannofossil zonation of the Jurasssic–Cretaceous boundary interval and correlation with the geomagnetic polarity timescale;Bralower;Marine Micropaleontology,1989