N B, B D, N N, M.V F, S.S P. Determination of Rare Earths and Other Trace Elements in Ore Samples of Mongolia by WDXRF and INAA. Sci. tran. NUM, Phys. [Internet]. 2022 Mar. 13 [cited 2024 Nov. 23];20(438):51-4. Available from: https://journal.num.edu.mn/physics/article/view/124