M. Anabuki, H. Kakuta, H. Yamamoto, and H. Tamura, Welbo: an embodied conversational agent living in mixed reality space, Proceedings of the International Conference on Human Factors in Computing Systems, CHI '00 Extended Abstracts, 2000.

E. Costanza, S. A. Inverso, and E. Pavlov, Eye-q: Eyeglass Peripheral Display for Subtle Intimate Notifications, Proceedings of the 8th Conference on Human-computer Interaction with Mobile Devices and Services, pp.211-218, 2006.

J. Elslander and K. Tanaka, A Notification-Centric Mobile Interaction Survey and Framework, Proceedings of the 5th International Conference, 2013.

L. Hallnäs and J. Redström, Slow Technology -Designing for Reflection, Personal and Ubiquitous Computing, vol.5, pp.201-212, 2001.

T. Nakajima and V. Lehdonvirta, Designing Motivation using Persuasive Ambient Mirrors. Personal and Ubiquitous Computing, vol.17, 2013.