HAMMILL, M. O.; GOSSELIN, J. F.; STENSON, G. B. Abundance of Northwest Atlantic grey seals in Canadian waters. NAMMCO Scientific Publications, [S. l.], v. 6, p. 99–115, 2007. DOI: 10.7557/3.2726. Disponível em: https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2726. Acesso em: 21 sep. 2021.