Rahman, Muhammad Aulia, and Taufik Dwi. “Time and Cost Efficiency Analysis of Shotcrete and Retaining Wall Methods for Landslide Disaster Mitigation”. ASEAN Natural Disaster Mitigation and Education Journal, vol. 3, no. 2, Jan. 2026, pp. 117-32, doi:10.61511/andmej.v3i2.2026.3285.