Valipour, A., N. Yahaya, N. Md Noor, S. Kildienė, H. Sarvari, and A. Mardani. “A Fuzzy Analytic Network Process Method for Risk Prioritization in Freeway PPP Projects: An Iranian Case Study”. Journal of Civil Engineering and Management, vol. 21, no. 7, July 2015, pp. 933-47, doi:10.3846/13923730.2015.1051104.