M. B. B. Abd-el-Malek and H. S. S. Hassan, “Symmetry analysis for steady boundary-layer stagnation-point flow of Rivlin–Ericksen fluid of second grade subject to suction”, NAMC, vol. 15, no. 4, pp. 379–396, Oct. 2010, doi: 10.15388/NA.15.4.14203.