Endriani, Debby, Nova Juliana, and Suranto Suranto. “The Effect of Palm Kernel Shell Ash and Calcium Sulfate Dihydrate on the Properties of Clay Soil for Road Repair”. SAINSTEK 13, no. 2 (December 30, 2025): 319–325. Accessed March 16, 2026. https://ejournal.sttp-yds.ac.id/index.php/js/article/view/400.