Ashuvendra Singh, Sunita Danu, Lakshman Singh. “SMPN 18 Management Techniques for Landslide Safety Keeping in View Balikpapan City”. Mathematical Statistician and Engineering Applications 71, no. 4 (September 16, 2022): 2646–2655. Accessed September 30, 2025. https://philstat.org/index.php/MSEA/article/view/822.