Unsteady MHD boundary layer stagnation point flow with heat and mass transfer in nanofluid in the presence of mass fluid suction and thermal radiationA. M. Salem, Galal Ismail and Rania FathyEur. Phys. J. Plus, 130 6 (2015) 113DOI: https://doi.org/10.1140/epjp/i2015-15113-6