新妻実保子, 橋本秀紀, "空間の観測に基づく人間の活動支援", エレクトロニクスシリーズ「ヒューマンインタフェースのための計測と制御」（監修：山口昌樹）第17章, pp. 211-226, シーエムシー出版, 2009.3
Takeshi Sasaki, Yoshihisa Toshima, Mihoko Niitsuma and Hideki Hashimoto, "Human System Interaction through Distributed Devices in Intelligent Space", pp. 77 - 90, Advances in Human-Robot Interaction, INTECH, 2009.
Mihoko Niitsuma, and Hideki Hashimoto, "Observation of Human Activities Based on Spatial Memory in Intelligent Space", Journal of Robotics and Mechatronics, Vol. 21, No. 4, pp. 515-523, 2009.
*Mihoko Niitsuma, Kazuki Yokoi, Hideki Hashimoto, "Describing Human-Object Interaction in Intelligent Space," Proceedings of the 2nd International Conference on Human System Interaction, 2009.05.23, Catania, Italy.
Kazuki Yokoi, *Mihoko Niitsuma, Hideki Hashimoto, "Improvement of Human-object Observation System", Proceedings of ICROS-SICE International Joint Conference 2009 (ICCAS-SICE2009), 2A10-1, 2009.08.19, Fukuoka, Japan.
*Mihoko Niitsuma, Kazuki Yokoi, and Hideki Hashimoto, "Observation of Human-Object Interaction Using Distributed Sensors", in Proc. of the 9th IFAC Symposium on Robot Control (Syroco '09)", pp. 373 - 378, 2009.09.10, Gifu.
*Mihoko Niitsuma, Hideki Hashimoto, "A Representation of Object Information Based on Interactions between Humans and Objects in Intelligent Space", The 6th International Conference on Ubiquitous Robotics and Ambient Intelligence(URAI2009), pp.240-243, 2009.10, Gwangju, Korea.
