国際会議
[1] Masateru Tsunoda, Kohei Mitsui, Kyohei Fushida, Yasutaka Kamei, Masahide Nakamura, Keita Goto, and Ken-ichi Matsumoto, "An Authentication Method Combining Spatiotemporal Information and Actions," In Proc. of the 4th International Conference on Mobile Computing and Ubiquitous Networking (ICMU 2008), pages 41-49 June 2008.