Reference

Mikhail A. Akhmetiev, Nina I. Zaporozhets, Vladimir N. Benyamovskiy, Galina N. Aleksandrova, Alina I. Iakovleva, Tatiana V. Oreshkina (2012): The Paleogene history of the Western Siberian seaway - a connection of the Peri-Tethys to the Arctic ocean. – Austrian Journal of Earth Sciences – 105_1: 50 - 67.