1. Omni-Directional Wheelchair;Woods,2006
2. Wheeled robots;Campion,2008
3. Meka Robotics, B1 Omni Base — Meka Robotics, 2013. URL: http://mekabot.com/products/omni-base/.
4. A novel approach for steering wheel synchronization with velocity/acceleration limits and mechanical constraints;Schwesinger,2012
5. Willow Garage, Hardware Specs — Willow Garage, 2017. URL: http://www.willowgarage.com/pages/pr2/specs.