Pike, Daniel G, Charles GM Paxton, Thorvaldur Gunnlaugsson, and Gísli A Víkingsson. “Trends in the distribution and abundance of cetaceans from aerial surveys in Icelandic coastal waters, 1986-2001”. NAMMCO Scientific Publications 7 (September 1, 2009): 117–142. Accessed January 8, 2025. https://new.eludamos.org/index.php/NAMMCOSP/article/view/2710.