Haug, Tore, Mike O Hammill, and Droplaug Ólafsdóttir. “Introduction: Grey seals in the North Atlantic and the Baltic”. NAMMCO Scientific Publications 6 (January 1, 2007): 7–12. Accessed April 25, 2024. https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2717.