1. Shigeoki Hirai, Tomomasa Sato, and Toshihiro Matsui: IEEE Conference on Decision and control Honolulu, Hawaii (1990), pp.51-56.
2. A Zaatri, M Oussalah: Information Fusion 2003(4). pp.135-150.
3. William R. Hamel, Ge Zhang, Pamela Murray: Proceeding of the IEEE International conference on Robotics & Automation (2002), pp.2880-2885.
4. Y. Yokokohji, A. Ogawa, H. Hasunuma, and T. Y. Yoshikawa: Proceedings of the IEEE International Conference on Robotics & Automation ( Atlanta, GA, May 1993), Vol3, pp.510-515.
5. T. Raimondi: Proc. of 24th conference on Remote Systems Technology, (1976), pp.188-195.