A.R.M. Kasim and  N.F. Mohammad and  Aurangzaib and  S. Sharidan,  Natural Convection Boundary Layer Flow of a Viscoelastic Fluid on Solid Sphere with Newtonian Heating.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    April 2012, vol. 64(4). 410 - 415
    [viewed 29 February 2020]. Available from: https://publications.waset.org/pdf/728.