Semenov, E., Sørensen, H. and Katajeva, Z. (1968) “On the mineralogy of pyrochlore from the IlÍmaussaq alkaline intrusion, South Greenland”, Bulletin Grønlands Geologiske Undersøgelse. Copenhagen, Denmark, 75, pp. 9–27. doi: 10.34194/bullggu.v75.6614.