@inproceedings{CHI-1991-Cohen,
	author        = "Philip R. Cohen",
	booktitle     = "{Proceedings of the Ninth ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/108844.109007",
	isbn          = "0-89791-383-3",
	pages         = "469--470",
	publisher     = "{ACM}",
	title         = "{Computer dialogue laboratory SRI International}",
	year          = 1991,
}