@article{paperid:1011509,
author = {Farshidianfar, Anoshirvan and Nickmehr, Neda},
title = {Some New Analytical Techniques for Duffing Oscillator with Very Strong Nonlinearity},
journal = {مهندسی مکانیک ایران-Iranian Journal of Mechanical Engineering Transactions of the ISME},
year = {2009},
volume = {10},
number = {1},
month = {March},
issn = {1605-9727},
pages = {31--53},
			numpages = {22},
keywords = {Duffing oscillator; strong nonlinearity; parameterized perturbation method; parameter expanding method; variational iteration method; homotopy perturbation;},
}