@inproceedings{SIGMOD-1991-PhippsDR,
	author        = "Geoffrey Phipps and Marcia A. Derr and Kenneth A. Ross",
	booktitle     = "{Proceedings of the 21st ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD91/P308.PDF",
	doi           = "10.1145/115790.115840",
	pages         = "308--317",
	title         = "{Glue-Nail: A Deductive Database System}",
	year          = 1991,
}