Khomyakov, Alexander P., and Henning Sørensen. “Zoning in Steenstrupine-(Ce) from the Ilímaussaq Alkaline Complex, South Greenland: A Review and Discussion”. Geology of Greenland Survey Bulletin 190 (December 21, 2001): 109–118. Accessed May 7, 2024. https://geusjournals.org/index.php/ggub/article/view/6390.