J, Temuujin, Burmaa G, Davaabal B, D S Kim, and H J Lee. “Preparation of Rare Earth Oxides from Synchysite Oxidized Ore by Acid Leaching”. Mongolian Journal of Chemistry 18, no. 44 (February 13, 2018): 1–4. Accessed March 29, 2024. https://www.mongoliajol.info/index.php/MJC/article/view/931.