@inproceedings{CHI-1991-NonogakiU,
	author        = "Hajime Nonogaki and Hirotada Ueda",
	booktitle     = "{Proceedings of the Ninth ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/108844.108978",
	isbn          = "0-89791-383-3",
	pages         = "407--414",
	publisher     = "{ACM}",
	title         = "{FRIEND21 project: a construction of 21st century human interface}",
	year          = 1991,
}