Sørensen, H. “On the History of Exploration of the Ilímaussaq Alkaline Intrusion, South Greenland”. Bulletin Grønlands Geologiske Undersøgelse 68 (October 31, 1967): 1–33. Accessed July 3, 2024. https://geusjournals.org/index.php/bullggu/article/view/6603.