HAQUE, M. R.; ALAM, M. M.; ALI, M. M.; SHEIKH, M. N. EFFECTS OF VISCOUS DISSIPATION ON MHD NATURAL CONVECTION FLOW OVER A SPHERE WITH TEMPERATURE DEPENDENT THERMAL CONDUCTIVITY IN PRESENCE OF HEAT GENERATION. European Scientific Journal, ESJ, v. 10, n. 15, 30 May 2014.