1. Handbook of Exact Solutions for Ordinary Differential Equations;Polyanin,2003
2. Integrability of polynomial differential systems;Llibre,2000
3. Invertible Point Transformations and Nonlinear Differential Equations;Steeb,1993
4. Equivalence, Invariants and Symmetry;Olver,1994
5. Elementary Lie Group Analysis and Ordinary Differential Equations;Ibragimov,1999