Omar, N., Abdul Malek Abdul Wahab, Zainudin A. Rasid, A. Abu, and N. F. M. N. Rudin. 2018. “Parametric Resonance of Shaft With Variable Slenderness Ratio”. International Journal of Engineering and Technology 7 (2): 759-63. https://doi.org/10.14419/ijet.v7i2.11139.