WOOD, S. A.; BRAULT, S.; GILBERT, J. R. 2002 Aerial Surveys of Grey Seals in the Northeastern United States. NAMMCO Scientific Publications, [S. l.], v. 6, p. 117–121, 2007. DOI: 10.7557/3.2727. Disponível em: https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2727. Acesso em: 22 apr. 2024.