@inproceedings{SIGMOD-1987-AlyO,
	author        = "Hussien Aly and Z. Meral Özsoyoglu",
	booktitle     = "{Proceedings of the 17th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD87/P060.PDF",
	doi           = "10.1145/38713.38726",
	pages         = "60--72",
	title         = "{Non-deterministic Modelling of Logical Queries in Deductive Databases}",
	year          = 1987,
}