HÅKANSSON, E.; MADSEN, L. San Fransisco, 1838, 1966, 1989, ?. Varv, [S. l.], v. 1989, n. 4, p. 1047–117, 1989. DOI: 10.7146/varv.v1989i4.144601. Disponível em: https://tidsskrift.dk/varv/article/view/144601. Acesso em: 5 jan. 2025.