S. Hanapi, M.H.A Mohd Fakharuzi, A.H. Abdol Rahim, AlHassan Salami Tijani, K.I. Sainan, and W.A.N. Wan Mohamed, “EFFECT OF GEAR RATIO ON THE DC MOTOR EFFICIENCY OF A MINIFUEL-CELL VEHICLE CRUISING AT CONSTANT SPEEDS”, J. Mech. Eng. Sci., vol. 8, pp. 1460–1471, Jun. 2015.