New File System with Conditional Access System for Removable Media. - Kiyohiko Ishikawa; Yusei Nishimoto; Arisa Fujii; Satoshi Fujitsu; Shunji Sunasaki; Takeshi Kimura (CCNC, 2007)

Churn-resistant method for DHT-based content delivery systems. - Hisayuki Ohmata; Kiyohiko Ishikawa; Hironori Sakakihara; Toru Kamiwada (CCNC, 2011)

Identity management architecture for integrated personalized service on TV. - Chigusa Yamamura; Kazuhiro Otsuki; Arisa Fujii; Kiyohiko Ishikawa (ICITST, 2011)