Mosa, Gamal Ahmed, A. M. El-naggar, and A. F. Elbassiouny. “Harmonic and Sub-Harmonic Resonance of MEMS Subjected to a Weakly Non-Linear Parametric and External Excitations”. International Journal of Applied Mathematical Research 2, no. 2 (April 2, 2013): 252–263. Accessed April 28, 2024. https://sciencepubco.com/index.php/ijamr/article/view/620.