@inproceedings{SIGMOD-1989-Anderson,
	author        = "L. Anderson",
	booktitle     = "{Proceedings of the 19th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD89/P004.PDF",
	pages         = "4",
	title         = "{User Interfaces}",
	year          = 1989,
}