HEIDE-JØRGENSEN, M. P.; WIIG, Øystein. Introduction. NAMMCO Scientific Publications, [S. l.], v. 4, p. 9–15, 2002. DOI: 10.7557/3.2834. Disponível em: https://new.eludamos.org/index.php/NAMMCOSP/article/view/2834. Acesso em: 6 jun. 2025.