M.H.M. Ariff; H. Zamzuri; M.A.M. Nordin; W.J. Yahya; S.A. Mazlan; M.A.A. Rahman. OPTIMAL CONTROL STRATEGY FOR LOW SPEED AND HIGH SPEED FOUR-WHEEL-ACTIVE STEERING VEHICLE. J. Mech. Eng. Sci. 2015, 8, 1516-1528.