Wijayanto, Yagus, Nandita Rani Nareswari, Tri Wahyu Saputra, and Ika Purnamasari. “Characterizing, Predicting, and Mapping Soil Available Phosphor, PH, and Electrical Conductivity in Rubber Plantation Based on Three Different Methods of Ordinary Kriging in GIS Environment”. International Journal on Advanced Science, Engineering and Information Technology 14, no. 2 (April 23, 2024): 520–527. Accessed July 22, 2024. https://ijaseit.insightsociety.org/index.php/ijaseit/article/view/19079.