@article{paperid:1037445,
author = {Afsharfard, Aref and Farshidianfar, Anoshirvan},
title = {An efficient concept for non-dimensionalizing the Duffing equations based on the parameterized perturbation method},
journal = {Scientia Iranica},
year = {2013},
volume = {20},
number = {5},
month = {August},
issn = {1026-3098},
pages = {1455--1463},
			numpages = {8},
keywords = {Nonlinear ordinary differential equation; Perturbation method; Characteristic distance; Non-dimensionalization},
}