MICHEELSEN, Harry. Geologisk Museum audio-guide. Varv, [S. l.], v. 1999, n. 2, p. 35, 1999. DOI: 10.7146/varv.v1999i2.143779. Disponível em: https://tidsskrift.dk/varv/article/view/143779. Acesso em: 7 dec. 2025.