1. S. Yuta, H. Hashimoto, and H. Tashiro, “Tsukuba Challenge – Real World Robot Challenge (RWRC): Toward actual autonomous robots in our daily life,” The 25th Annual Conf. of the Robotics Society of Japan, 3D19, 2007.
2. S. Yuta, “Tsukuba Challenge – Towards the robots work in real world,” SI2007, 3C1-1, 2007.
3. S. Yuta, M. Mizukawa, H. Hashimoto, and H. Tashiro, “Tsukuba Challenge 2008 – The RealWorld Robot Challenge for robot which works in our daily life environment,” SI2008, 1I3-1, pp. 367-368, 2008.
4. S. Yuta, M. Mizukawa, H. Hashimoto, and H. TASHIRO, “Tsukuba Challenge 2008 – The RealWorld Robot Challenge for robot which works in our daily life environment,” keynote speech, Tsukuba Challenge Symposium, Jan. 2009.
5. S. Yuta, M. Mizukawa, H. Hashimoto, and H. Tashiro, “Tsukuba Challenge 2008: The purpose and result on the Real World Robot Challenge,” JSME Robotics and Mechatronics Conf. 2009, 2A2-F08(1)-(4), 2009.