Muhammad, Ario, and Agus Setyo Muntohar. “Uses Of Lime -Rice Husk Ash And Plastic Fibers As Mixtures-Material In High-Plasticity Clayey Subgrade: A Preliminary Study”. Semesta Teknika 10, no. 2 (March 5, 2016): 145–154. Accessed April 30, 2025. https://journal.umy.ac.id/index.php/st/article/view/841.