1. Aijaz Ahmad, Symmetry Solutions of Some Nonlinear PDEs, M.S. thesis submitted to the King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, 2005.
2. Symmetry classification and reductions of some classes of (2+1) nonlinear heat equation;Ahmad;J Math Anal Appl,2008
3. An exact Solution of a quasilinear Fisher equation in cylindrical coordinates;Bokhari;Nonlinear Anal,2008
4. Introduction to symmetry analysis;Brian,2002
5. Symmetry and integration methods for differential equations;Bluman,2002