“Reconnaissance Mapping for the 1:500 000 Map Sheet in the Godthåb–Isua Region, Southern West Greenland”. Rapport Grønlands Geologiske Undersøgelse 85 (December 31, 1977): 50–54. Accessed December 28, 2025. https://geusjournals.org/index.php/rapggu/article/view/7530.