Escher, Arthur. “The Deformation and Granitization of Ketilidian Rocks in the Nanortalik Area, S. Greenland”. Meddelelser om Grønland 172, no. 9 (January 27, 1966): 1–102. Accessed December 28, 2025. https://tidsskrift.dk/meddrgroenland/article/view/158785.