Semenov, E.I, M.E Kazakova, and V.J Bukin. “Ilimaussite, a New Rare Earth-Niobium-Barium Silicate from Ilímaussaq South Greenland”. Bulletin Grønlands Geologiske Undersøgelse 75 (June 13, 1968): 3–7. Accessed July 3, 2024. https://geusjournals.org/index.php/bullggu/article/view/6613.