@inproceedings{SIGMOD-1975-Minker,
	author        = "Jack Minker",
	booktitle     = "{Proceedings of the Fifth ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD75/P079.PDF",
	doi           = "10.1145/500080.500092",
	pages         = "79--91",
	publisher     = "{ACM}",
	title         = "{Performing Inferences over Relation Data Bases}",
	year          = 1975,
}