Liaghat, A., and N. Tavanpour. “A Study of the Formation of Velocity Counter Lines and Secondary (Spiral) Flows in Different Cross Sections of Divergent, Convergent and Uniform Arcs”. Engineering, Technology & Applied Science Research 7, no. 1 (February 12, 2017): 1391–1397. Accessed April 6, 2025. https://mail.etasr.com/index.php/ETASR/article/view/821.