Kalsbeek, F, and H.P Zeck. “Preliminary Rb-Sr Whole-Rock Data for Archean and Nagssugtoqidian Rocks from the Søndre Strømfjord Area, West Greenland”. Rapport Grønlands Geologiske Undersøgelse 90 (December 31, 1978): 129–134. Accessed July 3, 2024. https://geusjournals.org/index.php/rapggu/article/view/7611.