Hansen, J. (1968) “A Study of Radioactive Veins containing rare-Earth Minerals in the Area surrounding the Ilímaussaq Alkaline Intrusion in South Greenland”., Meddelelser om Grønland, 181(8), p. 51 pp. Available at: https://tidsskrift.dk/meddrgroenland/article/view/153077 (Accessed: 28 December 2025).