1. M. Abramowitz, I.A. Stegun (Eds.), Handbook of Mathematical Functions, Dover publications, Inc., New York, 1970.
2. W.F. Ames, Nonlinear Partial Differential Equations in Engineering, vol. 2, Academic Press, New York, 1972.
3. The general similarity solution of the heat equation;Bluman;J. Math. Mech.,1969
4. Symmetries and Differential Equations;Bluman,1989
5. J.M. Burgers, in: R. von Mises, T. von Karman, (Eds.), A Mathematical Model Illustrating the Theory of Turbulence, Adv. Appl. Mech. 1 (1948) 171–199.