Jain, A., F. Khan, P. Gupta, K. Gupta, and S. R. Yadav. “CHALLENGES FACED IN PPP AND HAM MODEL AND THE NEED FOR AN ALTERNATIVE”. Journal of Civil Engineering, Science and Technology 10, no. 2 (September 29, 2019): 93-104. Accessed April 23, 2024. https://publisher.unimas.my/ojs/index.php/JCEST/article/view/1407.