Widodo H, Setyarto MR, Andhy A, Prastya M, Annisa A. Laboratory Analysis Using Coconut Shell from Bekasi Regency for Drilling Mud Additives on Oil and Gas Wells. J. earth energy eng. [Internet]. 2020 Apr. 30 [cited 2026 Jun. 5];9(1):46-58. Available from: https://journal.uir.ac.id/index.php/JEEE/article/view/3975