SINGH, P., KUMAR, A., TOMER, N. S., & SINHA, D. (2013). Analysis of Porosity Effects on Unsteady Stretching Permeable Sheet. Walailak Journal of Science and Technology (WJST), 11(7), 611–620. Retrieved from https://wjst.wu.ac.th/index.php/wjst/article/view/646