Yong Xu, Tatsuya Hiramatsu, Kateryna Tarasenko, Toyoaki Nishida, Yoshiyasu Ogasawara, Takashi Tajima, Makoto Hatakeyama, Masashi Okamoto, Yukiko I. Nakano. A two-layered approach to communicative artifacts. AI Soc., 22(2):185-196, 2007. [doi]
Abstract is missing.