RASMUSSEN, H. W.; RASMUSSEN, C. Danmarks undergrund. Varv, [S. l.], v. 1965, n. 3, p. 11–22, 1965. DOI: 10.7146/varv.v1965i3.151791. Disponível em: https://tidsskrift.dk/varv/article/view/151791. Acesso em: 8 jan. 2025.