Karim, M. A., Sami Hassan Ahmed, and Fatih Oncul. “Optimization of Fly-Ash to Soil Mix Ratio and Curing Period for Subgrade Use”. Insight - Civil Engineering 2, no. 1 (December 19, 2019): 91. Accessed April 3, 2025. https://insight.piscomed.com/index.php/ICE/article/view/91.