Thongjub, N., B. Puangkird, and V. Ngamaramvaranggul. “Simulation of Slip Effect With 4:1 Contraction Flow for Oldroyd-B Fluid”. Applied Science and Engineering Progress 6, no. 3 (December 24, 2013): 19–28. Accessed March 3, 2024. https://ph02.tci-thaijo.org/index.php/ijast/article/view/67416.