“Anorthosite Xenoliths and Plagioclase Megacrysts in Precambrian Intrusions of South Greenland. Parts I and II”. Bulletin Grønlands Geologiske Undersøgelse 77 (May 7, 1968): 1–243. Accessed January 11, 2026. https://geusjournals.org/index.php/bullggu/article/view/6617.