Khin Fai Chen and Jee-Hou Ho and Eng Hwa Yap, Piezoelectric Approach on Harvesting Acoustic Energy. journal = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology. July 2015, vol. 104(8). 774 - 780 [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/10001948.