Hayat, Tanzim, and A S M Maksud Kamal. “Application of GPR to Detect Lost Valve Chambers in a Utility Network”. The Dhaka University Journal of Earth and Environmental Sciences 12, no. 2 (June 24, 2024): 139–151. Accessed July 17, 2024. https://banglajol.info/index.php/DUJEES/article/view/73172.