SØRENSEN, Henning. Hul i oceanet. Varv, [S. l.], v. 1964, n. 2, p. 3–11, 1964. DOI: 10.7146/varv.v1964i2.151847. Disponível em: https://tidsskrift.dk/varv/article/view/151847. Acesso em: 6 dec. 2025.