Reza Permana Putuarga, Alfiady, et al. “Analysis of Road Embankment Improvement on Soft Soil Using Foamed Mortar Lightweight Embankment”. Journal of Infrastructure & Facility Asset Management, vol. 6, no. 1, May 2025, pp. 49-64, https://journal.its.ac.id/index.php/jifam/article/view/4196.