Aditama, Akhmad Taufik, et al. “Analysis of Aggregate Gradation to Improve The Characteristics of Geopolymer Based Asphalt Concrete”. IPTEK The Journal for Technology and Science, vol. 29, no. 3, July 2025, pp. 86-90, https://journal.its.ac.id/index.php/jts/article/view/4393.