“Kajian Kestabilan Lereng Penambangan Batubara Pada. Pit. 1 PT. Indomas Karya Jaya (IKJ) Provinsi Kalimantan Timur”. Jurnal Geologi Pertambangan (JGP), vol. 27, no. 1, Sept. 2021, pp. 14-23, https://doi.org/10.53640/jgp.v27i1.919.