Mohd Daud, M. F. A. ., Basari, A. A., Yan, N. X. ., Ahmad Nawir, N. A., Hashimoto, S., & Ahmad Isira, A. S. . (2020). Parametric Experimentation of Output Efficiency of Vibration-Based Impact Mode Piezoelectric Power Generator. International Journal of Integrated Engineering, 13(2), 61-71. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/6493