H. . Prayuda, “Repairing of Flexural Cracks on Reinforced Self-Healing Concrete Beam using Bacillus Subtillis Bacteria”, ijie, vol. 12, no. 4, pp. 300–309, May 2020, Accessed: May 02, 2024. [Online]. Available: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/6318