Khabiri, M. M., and Z. . Ghafoori Fard. “Application of Mathematical Models for Optimizing Inspection Frequency in Maintenance and Management of Pavement”. Journal of Science and Technology, vol. 13, no. 2, Dec. 2021, pp. 38-46, https://publisher.uthm.edu.my/ojs/index.php/JST/article/view/9285.