1. Review of symbolic software for the computation of Lie symmetries of differential equations;Hereman;Euromath. Bull.,1994
2. W. Hereman, Symbolic software for Lie symmetry analysis, in: N.H. Ibragimov (Ed.), CRC Handbook of Lie Group Analysis of Differential Equations, Vol. 3: New Trends in Theoretical Developments and Computational Methods, chapter 13, CRC Press, Boca Raton, 1996, pp. 367–413
3. G. Baumann, Symmetry Analysis of Differential Equations Using Mathematica, TELOS/Springer, New York, 1998
4. P.J. Olver, Applications of Lie Groups to Differential Equations, Springer, Berlin, 1986
5. N.H. Ibragimov, Transformation Groups Applied to Mathematical Physics, Reidel, Dordrecht, 1985