Nguyen, Phong Thanh, Veerasak Likhitruangsilp, and Masamitsu Onishi. “Prioritizing Factors Affecting Traffic Volume of Public-Private Partnership Infrastructure Projects”. International Journal of Engineering & Technology 7, no. 4 (September 5, 2018): 2988–2991. Accessed May 6, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/21526.