@inproceedings{SIGMOD-1987-Wiederhold,
	author        = "Gio Wiederhold",
	booktitle     = "{Proceedings of the 17th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD87/P005.PDF",
	pages         = "5",
	title         = "{Experience with Knowledge Bases}",
	year          = 1987,
}