Masanori Hattori Kenta Cho Akihiko Ohsuga Masao Isshiki Shinichi Honiden Context-aware agent platform in ubiquitous environments and its verification tests. 13-23 2004 35 Systems and Computers in Japan 7 http://dx.doi.org/10.1002/scj.10655 db/journals/scjapan/scjapan35.html#HattoriCOIH04