Rashidi, M.M.M. and Mohimanian Pour, S.A.A. 2010. Analytic approximate solutions for unsteady boundary-layer flow and heat transfer due to a stretching sheet by homotopy analysis method. Nonlinear Analysis: Modelling and Control. 15, 1 (Jan. 2010), 83–95. DOI:https://doi.org/10.15388/NA.2010.15.1.14366.