1.
Anggara F, T.B.M. Petrus H, Patria AA, Bangun AS. Preliminary Study of Rare Earth Element and Yttrium (REY) Content of Coal In Sangatta Coalfield, East Kalimantan, Indonesia. Indonesian J. Geosci. [Internet]. 2020 Nov. 13 [cited 2025 Feb. 13];7(3):305-14. Available from: https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/418