Boltunov, Andrei N, and Stanislav E Belikov. “Belugas (Delphinapterus Leucas) of the Barents, Kara and Laptev Seas”. NAMMCO Scientific Publications 4 (July 22, 2002): 149–168. Accessed July 23, 2026. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2842.