Belikov, Stanislav E, and Andrei N Boltunov. “Distribution and Migrations of Cetaceans in the Russian Arctic According to Observations from Aerial Ice Reconnaissance”. NAMMCO Scientific Publications 4 (July 21, 2002): 69–86. Accessed September 10, 2026. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2838.