فهرس المقالات Hadi Ebrahimi Khah المقاله 1 - Determination of the amplitude-frequency for strongly nonlinear oscillator by two approximate analytical techniques 10.1186/2251-7235-7-38 Amir Ayazi Hadi Ebrahimi Khah Journal of Theoretical and Applied Physics , العدد 1 , السنة 0 , زمستان 2013 المقاله 2 - The comparison of homotopy perturbation method with finite difference method for determination of maximum beam deflection 10.1186/2251-7235-7-8 Masoud Saravi Martin Hermann Hadi Ebrahimi Khah Journal of Theoretical and Applied Physics , العدد 1 , السنة 0 , زمستان 2013
