Chenarani, A., and E. A. Druzhinin. “A Quantitative Measure For Evaluating Project Uncertainty Under Variation And Risk Effects”. Engineering, Technology & Applied Science Research 7, no. 5 (October 19, 2017): 2083–2088. Accessed June 30, 2024. https://etasr.com/index.php/ETASR/article/view/1530.