“Programme of Geochronology and Isotope Geochemistry in the Ammassalik Region, South-East Greenland: Outline and Preliminary Results”. Rapport Grønlands Geologiske Undersøgelse 146 (December 31, 1989): 13–16. Accessed October 15, 2025. https://geusjournals.org/index.php/rapggu/article/view/8090.