References
- Wittenburg , J. 1977 . Dynamics of Systems of Rigid Bodies , Stuttgart : Teubner .
- Agulló , J. , Cardona , S. and Vivancos , J. 1987 . kinematics of vehicles with directional sliding wheels . Mech. Mach. Theory , 22 : 295 – 301 .
- Muir , P. F. and Neuman , C. P. 1987 . Kinematic Modeling for Feedback Control of an Omnidirectional Wheeled Mobile Robot . 1987 IEEE International Conference on Robotilcs and Automation . March-April 1987 , Raleigh, North Carolina.