Copyright © 2010 Fengjuan Cao et al. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
By topological degree theory and some analysis skills, we consider a
class of generalized Liénard type -Laplacian equations. Upon some suitable assumptions, the
existence and uniqueness of periodic solutions for the generalized Liénard type -Laplacian
differential equations are obtained. It is significant that the nonlinear term contains two