LYDERSEN, Christian; KOVACS, Kit M. Status and biology of harbour seals (Phoca vitulina) in Svalbard. NAMMCO Scientific Publications, Tromsø, Norway, v. 8, p. 47–60, 2010. DOI: 10.7557/3.2671. Disponível em: https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2671. Acesso em: 18 apr. 2026.