Khalid Mahmood., Muhammad Sajid., Nasir Ali., and Tariq Javed. “Effects of Lubrication in Mhd Mixed Convection Stagnation Point Flow of a Second Grade Fluid Adjacent to a Vertical Plate”. Revista Mexicana De Física, vol. 63, no. 2, Jan. 2017, pp. 134-4, doi:10.31349/RevMexFis.63.2.134.