Ali, M. Y., N. M. R. Zahed, M. N. Uddin, and M. J. Uddin. “Similarity Solutions for an Internal Heat Generation, Thermal Radiation and Free Convection Unsteady Boundary Layer Flow over a Vertical Plate”. Journal of Scientific Research, vol. 8, no. 3, Sept. 2016, pp. 341-53, doi:10.3329/jsr.v8i3.27851.