Bhattacharyya, K., M. Uddin, G. Layek, and W. A. Pk. “Analysis of Boundary Layer Flow and Heat Transfer for Two Classes of Viscoelastic Fluid Over a Stretching Sheet With Heat Generation or Absorption”. Bangladesh Journal of Scientific and Industrial Research, vol. 46, no. 4, Jan. 2012, pp. 451-6, doi:10.3329/bjsir.v46i4.9590.