“Pemetaan Sebaran Kadar Besi Pada Endapan Laterit Nikel Menggunakan Metode Interpolasi Indikator Kriging Dan Ordinary Kriging: Mapping The Distribution of Iron Content in Nickel Laterite Deposits Using Indicator Kriging and Ordinary Kriging Interpolation Method”. PROMINE, vol. 9, no. 1, Sept. 2021, pp. 29-36, https://doi.org/10.33019/promine.v9i1.2316.