1. A Modified Energy Balance Method to Obtain Higher-order Approximations to the Oscillators with Cubic and Harmonic Restoring Force

Volume 6, Issue 2, Spring 2020, Pages 320-331


Md Alal Hosen; Gamal Ismail; Ahmet Yildirim; M.A.S. Kamal

2. Periodic Solutions of the Duffing Harmonic Oscillator by He's Energy Balance Method

Volume 2, Issue 1, Winter 2016, Pages 35-41


A. M. El-Naggar; Gamal Ismail

3. An Analytical Technique for Solving Nonlinear Oscillators of the Motion of a Rigid Rod Rocking Bock and Tapered Beams

Volume 2, Issue 1, Winter 2016, Pages 29-34


Gamal Ismail