WIKSTRÖM, Anders. Kolmårdsmarmor. Varv, [S. l.], v. 1980, n. 1, p. 30–32, 1980. DOI: 10.7146/varv.v1980i1.148073. Disponível em: https://tidsskrift.dk/varv/article/view/148073. Acesso em: 7 dec. 2025.