@inproceedings{CHI-2001-TsukaharaW,
	author        = "Wataru Tsukahara and Nigel Ward",
	booktitle     = "{Proceedings of the 19th ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/365024.365047",
	isbn          = "1-58113-327-8",
	pages         = "77--84",
	publisher     = "{ACM}",
	title         = "{Responding to subtle, fleeting changes in the user’s internal state}",
	year          = 2001,
}