Nilssen, Kjell Tormod, and Tore Haug. “Status of grey seals (<i>Halichoerus grypus</i>) in Norway”. NAMMCO Scientific Publications 6 (January 1, 2007): 23–31. Accessed December 19, 2024. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2719.