@inproceedings{CHI-1991-Tatsukawa,
	author        = "Kosuke Tatsukawa",
	booktitle     = "{Proceedings of the Ninth ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/108844.108934",
	isbn          = "0-89791-383-3",
	pages         = "323--328",
	publisher     = "{ACM}",
	title         = "{Graphical toolkit approach to user interaction description}",
	year          = 1991,
}