Santoso, Eko, Romla Noor Hakim, and Adip Mustofa. “Slope Stability Analysis Based On Rock Mass Characterization In Open Pit Mine Method”. POROS TEKNIK 8, no. 1 (March 26, 2017): 10–15. Accessed May 4, 2024. https://ejurnal.poliban.ac.id/index.php/porosteknik/article/view/376.