Shaffiee Haghshenas, Sina, Sami Shaffiee Haghshenas, Milad Barmal, and Niloofar Farzan. “Utilization of Soft Computing for Risk Assessment of a Tunneling Project Using Geological Units”. Civil Engineering Journal 2, no. 7 (July 30, 2016): 358–364. Accessed October 11, 2025. http://www.civilejournal.org/index.php/cej/article/view/129.