Yudhistira Baggio, Eugene, Toni Hartono Bagio, and Julistyana Tistogondo. “Mix Design Programming for Normal Concrete Using Cubic Equation”. ASTONJADRO 12, no. 1 (January 3, 2023): 77–85. Accessed January 22, 2025. https://ejournal.uika-bogor.ac.id/index.php/ASTONJADRO/article/view/7143.