Low, P. S.; Ramlan, R.; A. Ghani, H.; Muhammad, N. S. Experimental Analysis on the Transduction Coefficient of a Non-Linear Electromagnetic Energy Harvesting Device With Softening Stiffness. Int. J. Automot. Mech. Eng. 2020, 17 (2), 7816-7831. https://doi.org/10.15282/ijame.17.2.2020.01.0582.