Purnomo, Hendro. “COMPARISON THE PERFORMANCE OF ORDINARY KRIGING AND INVERSE DISTANCE WEIGHTING METHODS FOR MAPPING NICKEL LATERITE PROPERTIES”. KURVATEK 4, no. 1 (June 25, 2019): 57-67. Accessed July 22, 2024. //journal.itny.ac.id/index.php/krvtk/article/view/1116.