HAUKSSON, Erlingur. Abundance of grey seals in Icelandic waters, based on trends of pup-counts from aerial surveys. NAMMCO Scientific Publications, Tromsø, Norway, v. 6, p. 85–97, 2007. DOI: 10.7557/3.2725. Disponível em: https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2725. Acesso em: 2 may. 2026.