“The Grønnedal–Ìka Alkaline Complex, South Greenland. The Structure and Geological History of the Complex”. Bulletin Grønlands Geologiske Undersøgelse 45 (June 24, 1964): 1–75. Accessed January 4, 2026. https://geusjournals.org/index.php/bullggu/article/view/6579.