GRIMM, Kent; PEDERSEN, Stig Asbjørn Schack. Tungsand. Varv, [S. l.], v. 1990, n. 3, p. 67–81, 1990. DOI: 10.7146/varv.v1990i3.144592. Disponível em: https://tidsskrift.dk/varv/article/view/144592. Acesso em: 20 feb. 2026.