1. Furuta T. Okumura Y. & Tomiyama K. 2000 Design and construction of a serious of compact humanoid robots and development of biped walk control strategies. In CD-ROM Proc. IEEE-RAS Int. Conf. on Humanoid Robots Boston MA .
2. Hirose M. Haikawa Y. Takenaka T. & Hirai K. 2001 Development of humanoid robot ASIMO. In Proc. Int. Conf. on Intelligent Robots and Systems Workshop2 pp. 1–6.
3. Ishida T. Kuroki Y. Yamagichi J. Fujita M. Doi T. 2001 Motion entertainment by a small humanoid robot based on OPEN-R. In Proc. IEEE/RSJ Int. Conf. on Intelligent Robots and Systems Maui Hawaii pp. 1079–1086.
4. Kagami S. NIshiwaki K. Kuffner J. Kuniyoshi Y. Inaba M. & Inoue H. 2001 Design and implementation of software research platform for humanoid robotics: H7. In Proc. IEEE-RAS Int. Conf. on Humanoid Robots Tokyo Japan pp. 253–258.
5. Kanehiro F. Kaneko K. Fujiwara K. Harada K. Kajita S. Yokoi K. Hirukawa H. Akachi K. & Isozumi T. 2003 The first humanoid robot that has the same size as a human and that can lie down and get up. In Proc. IEEE Int. Conf. on Robotics and Automation Taipei Taiwan pp. 1633–1639.