Tarasenko K. K., Lopatin A. V. New baleen whale genera (Cetacea, Mammalia) from the Miocene of the Northern Caucasus and Ciscaucasia: 2. Vampalus gen. nov. from the Middle–Late Miocene of Chechnya and Krasnodar Region // Paleontological Journal. — 2012. — Vol. 46, № 6. — P. 620–629. — doi:10.1134/S003103011206010X.