Amangeldykyzy A, Kopobaуeva A, Askarova N, Ozhigin D, Portnov V. Study of rare earth elements in the coals of the Shubarkol deposit. Kompl. Ispolz. Min. Syra = Compl. Use of Min. Resour. [Internet]. 2021 Oct. 13 [cited 2026 Feb. 4];319(4):48-56. Available from: https://kims-imio.com/index.php/main/article/view/73