1. Control of an omni-directional robotic vehicle with Mecanum wheels;Dickerson,1991
2. ARMAR-III: An integrated humanoid platform for sensory-motor control;Asfour,2006
3. Segway Inc., Segway Robotic Mobility Platforms (RMPs) Segway RMP400 Omni, 2017. URL: http://rmp.segway.com/about-segway-robotics/segway-rmp400-omni/.
4. Omni-directional wheelchair;Woods,2006
5. Wheeled robots;Campion,2008