A note on On explicit exact solutions for the Lienard equation and its applications

Feng [Phys. Lett. A 293 (2002) 50] obtained a kind of explicit exact solutions to the Lienard equation, and applied these results to find some explicit exact solitary wave solutions to the nonlinear Schrodinger equation and the Pochhammer-Chree equation. In this Letter, more explicit exact solitary wave solutions for the generalized Pochhammer-Chree equation are given by seeking qualitatively the homoclinic or heteroclinic orbits for this class of Lienard equation. Our results extended or improved the results in [Phys. Lett. A 293 (2002) 50; Acta Math. Appl. Sinica 21 (2) (1998) 249; Comput. Phys. Commun. 13 (1977) 149; Phys. Lett. A 196 (1995) 301; Stud. Appl. Math. 75 (1986) 95]. (C) 2003 Elsevier B.V. All rights reserved.