Abd-el-Malek, M. B. B., and H. S. S. Hassan. “Symmetry Analysis for Steady Boundary-Layer Stagnation-Point Flow of Rivlin–Ericksen Fluid of Second Grade Subject to Suction”. Nonlinear Analysis: Modelling and Control, vol. 15, no. 4, Oct. 2010, pp. 379-96, https://doi.org/10.15388/NA.15.4.14203.