References

Bluman, G.W. and S.C. Anco, 2008. Symmetry and Integration Methods for Differential Equations. Vol. 154, Springer, New York, USA., Pages: 419.

Bluman, G.W., A.F. Cheviakov and S.C. Anco, 2010. Applications of Symmetry Methods to Partial Differential Equations. Springer, New York, USA., Pages: 367.

Cicogna, G. and G. Gaeta, 1999. Symmetry and Perturbation Theory in Nonlinear Dynamics. 1st Edn., Springer, Berlin, Germany, ISBN:978-3-540-65904-4, Pages: 212.

Hydon, P.E., 2000. Symmetry Methods for Differential Equations: A Beginner’s Guide. Vol. 22, Cambridge University Press, Cambridge, UK., ISBN:0-521-49703-5, Pages: 181.

Ibragimov, N.K., 1999. Elementary Lie Group Analysis and Ordinary Differential Equations. 1st Edn., John Wiley & Sons, John Wiley & Sons, New York, USA., ISBN-13:9780471974307, Pages: 347.

Nass, A.M., 2014. Symmetry analysis and invariants solutions of Laplace equation on surfaces of revolution. Adv. Math. Sci. J., 3: 23-31.
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Olver, P.J., 1986. Application of Lie Groups to Differential Equations. Springer, New York, USA.,.

Olver, P.J., 2012. Applications of Lie Groups to Differential Equations. Springer Science & Business Media, New York, USA., ISBN-13:978-1-4684-0276-6, Pages: 499.

Stephani, H., 1989. Differential Equations: Their Solution using Symmetries. Cambridge University Press, Cambridge, UK., ISBN:9780521366892, Pages: 276.