Layek, G. C., S. Mukhopadhyay, and SK. A. Samad. 2006. “Scaling Group of Transformations for Boundary Layer stagnation‐point Flow through a Porous Medium towards a Heated Stretching Sheet”. Mathematical Modelling and Analysis 11 (2):187-97. https://doi.org/10.3846/13926292.2006.9637312.