Purnama, Mohammad Dian. “Variable Selection in Clustering for Sanitation Access Analysis in East Java Supporting SDG 6”. Engineering, MAthematics and Computer Science Journal (EMACS) 8, no. 1 (May 15, 2026): 49–55. Accessed July 5, 2026. https://journal.binus.ac.id/index.php/EMACS/article/view/14729.