Vosoughi, V., H. D. Nasserabadi, and A. Babaei. “Investigating Appropriate Financing Methods in Collaborative Projects of Water and Wastewater With AHP Approach”. Engineering, Technology & Applied Science Research 7, no. 5 (October 19, 2017): 2089–2093. Accessed June 26, 2022. https://www.etasr.com/index.php/ETASR/article/view/1400.