Kengaliev, B. K., T.YU. Surkova, S.B. Yulusov, E. A. Pirmatov, and A. P. Dulenin. “Rare-Earth Concentrate Production From Technogenic Mineral Formations”. KnE Materials Science 2, no. 2 (September 3, 2017): 158-162. Accessed May 1, 2024. https://knepublishing.com/index.php/KnE-Materials/article/view/963.