LAUFELD, S. Mamutter i dybfryser. Varv, [S. l.], v. 1978, n. 4, p. 99–104, 1978. DOI: 10.7146/varv.v1978i4.149506. Disponível em: https://tidsskrift.dk/varv/article/view/149506. Acesso em: 7 jan. 2025.