Norbakyah, J., C. Fung, W. Atiq, M. Daud, and A. Salisa. “An Optimal Lithium Ion Battery for Plug-in Hybrid Electric Recreational Boat in Discharging Condition”. Journal of Mechanical Engineering and Sciences, vol. 10, no. 3, Dec. 2016, pp. 2363-74, doi:10.15282/jmes.10.3.2016.13.0219.