Mat Zian @ Mat Zin, Ahmad Faiz, Mantari, M.H.A.R., M.H.A.R., Roslan, M. S., Azahan, Aziz, N.I.N.A., and Daud, N.L.M. 2024. “Piezoelectric Battery Charger”. Multidisciplinary Applied Research and Innovation 5 (3): 117-23. https://penerbit.uthm.edu.my/periodicals/index.php/mari/article/view/13849.