Kalsbeek, Feiko. “The Petrography and Origin of Gneisses, Amphibolites and Migmatites in the Qasigialik Area, South-West Greenland. ”. Meddelelser om Grønland 189, no. 1 (January 16, 1970): 81 pp. Accessed February 28, 2026. https://tidsskrift.dk/meddrgroenland/article/view/150811.