@article{paperid:1078987, author = {M. Mohammadian and Shariati, Mahmoud}, title = {Application of AG method and its improvement to nonlinear damped oscillators}, journal = {Scientia Iranica}, year = {2018}, month = {October}, issn = {1026-3098}, keywords = {Nonlinear frequency; Akbari-Ganji\\\\\\\'s Method (AGM); Variational Iteration Method (VIM); Semi-analytical technique; Damped Dung oscillator; Flexible beam with damping; Transversal vibration; Quintic nonlinear beam.}, }