Bong, Zhang Min, and Mohammad Ashraf Abdul Rahman. “Investigation on Wall Cracking by Using Visual Inspection and Determine The Suitable Methods for Maintenance Action”. Progress in Engineering Application and Technology 3, no. 1 (June 19, 2022): 240–248. Accessed February 25, 2024. https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/6112.