ZYRYANOV, Sergey V; EGOROV, Sergey A. Status of the harbour seal (Phoca vitulina) along the Murman coast of Russia. NAMMCO Scientific Publications, Tromsø, Norway, v. 8, p. 37–46, 2010. DOI: 10.7557/3.2670. Disponível em: https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2670. Acesso em: 13 jun. 2026.