@article{paperid:1033953,
author = {M.T. Ahmadian and M. Mojahedi and Moeenfard, Hamid},
title = {Free vibration analysis of a nonlinear beam using homotopy and modified lindstedt-poincare methods},
journal = {Journal of Solid Mechanics},
year = {2009},
volume = {1},
number = {1},
month = {February},
issn = {2008-3505},
pages = {1--10},
			numpages = {9},
keywords = {Free vibration; Nonlinear beam; Homotopy perturbation method; Lindstedt-Poincare 
method; Axial load},
}