1.
Usman F, Tinungki GM, Herdiani ET. Model Semivariogram dalam Menaksir Sebaran Kadar Ni Menggunakan Metode Ordinary Kriging (Studi Kasus Endapan Nikel Laterit di PT Vale Indonesia Tbk). sjt [Internet]. 2022 Apr. 25 [cited 2025 May 17];6(1):55-67. Available from: https://journal.itk.ac.id/index.php/sjt/article/view/697