1) Hiroaki Kawamoto, Siiwoong Lee, Shigehiro Kanbe, Yoshiyuki Sankai : Power Assist Method for HAL-3 using EMG-based Feedback Controller, Proceedings of the 2003 IEEE International Conference on Systems Man and Cybernetics, 1648-1653, (2003).
2) Segway® : http://www.segway.com/, Available 17 July, (2008).
3) U3-X : http://www.honda.co.jp/motorshow/2009/U3-X/, Available 15 October, (2010)
4) Winglet : http://www2.toyota.co.jp/jp/tech/p_mobility/winglet/, Available 15 October, (2010).