Yong, V. K. C., and A. Ismail. “The Corrosion Under Insulation (CUI) Monitoring: Prediction of CUI Using Electromagnetic Wave”. Research Progress in Mechanical and Manufacturing Engineering, vol. 2, no. 2, Jan. 2022, pp. 1063-8, https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/5158.