Putra, Heriansyah, Alfaris B. Arrazzaq, Raihan M. I. Hidayatullah, Maulina Lamuse, Fauzan R. Ananda, and Angga Prayoga. “Improving CBR Parameter of Expansive Soil Using the Carbonate Precipitation Method With Tofu Waste As a Biocatalyst”. Civil Engineering Journal 9 (November 25, 2023): 163–172. Accessed June 25, 2025. https://www.civilejournal.org/index.php/cej/article/view/4438.