J. Wang, Q. Wang, L. Jin and C. Song, “Independent Wheel Torque Control of 4WD Electric Vehicle for Differential Drive Assisted Steering,” Mechatronics, Vol. 21, 2011, pp. 63-76. doi:10.1016/j.mechatronics.2010.08.005
 J. Wang, Q. Wang and L. Jin, “Modeling and Simulation Studies on Differential Drive Assisted Steering for EV with Four-Wheel-Independent-Drive,” Proceedings of the 4th IEEE Vehicle Power and Propulsion Conference (VPPC2008), Harbin, 3-5 September 2008, pp. 1-7.
 H. Yoichi, T. Yasushi and T. Yoshimasa, “Traction Control of Electric Vehicle: Basic Experimental Results Using the Test EV ‘UOT Electric March,’” IEEE Transaction on Industry Application, Vol. 34, No. 5, 1998, pp. 1131-1138.
 S. Shin-Ichiro, S. Hideo and H. Yoichi, “Motion Control in an Electric Vehicle with Four Independently Driven In-Wheel Motors,” IEEE Transactions on Mechatronics, Vol. 4, No. 1, 1999, pp. 9-16. doi:10.1109/3516.752079
 T. G. Habetler, F. Profumo, M. Pastorelli and L. Tolbert, “Direct Torque Control of Induction Machines Using Space Vector Modulation,” IEEE Transaction on Industry Applications, Vol. 28, No. 5, 1992, pp. 1045-1053. doi:10.1109/28.158828