Semenov, E. I., M. E. Kazakova, and V. J. Bukin. 1968. “1. Ilímaussite, a New Rare Earth-Niobium-Barium Silicate from Ilímuassaq, South Greenland”. Meddelelser Om Grønland 181 (7):1-8. https://tidsskrift.dk/meddrgroenland/article/view/153074.