Syed , Fahmidul Huq, Li Wah Thong, Mirza Farrukh Baig, Yee Kit Chan, and M. N. Ervina Efzan. “Optimizing Piezoelectric Energy Harvesters: A Study on Magnetic Nonlinearity”. Journal of Human, Earth, and Future 6, no. 4 (December 1, 2025): 986–1003. Accessed March 3, 2026. https://www.hefjournal.org/index.php/HEF/article/view/601.