1. Asada A, Ura T, Han J, et al (2006) First sea trial of advanced seafloor geodetic observation system using autonomous underwater vehicles (in Japanese). In: Proceedings of the meeting of the marine acoustic society Japan, May 26, Tokyo, pp 89–92
2. Han J, Asada A, Ura T, et al (2006) High-speed acoustic network and noncontact power supplier for seafloor geodetic observing robot system (in Japanese). In: Proceedings of the meeting of the marine acoustic society Japan, pp 93–96
3. Han J, Asada A, Ura T et al (2006) High-speed acoustic network and noncontact power supplier for seafloor geodetic observing robot system. IEEE, Oceans 2006, May 17, Singapore, p 94
4. Han J, Asada A, Ura T, et al (2006) Practical use examination of high-speed acoustic network and noncontact power supplier for a seafloor geodetic observing robot system (in Japanese). In: Proceedings of the meeting of the advanced marine science and technology society of Japan, May 19, Tokyo, pp 73–76