Semenov, E. I., Sørensen, H., & Katajeva, Z. T. (1968). 2. On the Mineralogy of Pyrochlore from the Ilímaussaq Alkaline Intrusion, South Greenland. Meddelelser Om Grønland, 181(7), 9–27. Retrieved from https://tidsskrift.dk/meddrgroenland/article/view/153075