@inproceedings{SIGMOD-1989-ChomickiI,
	author        = "Jan Chomicki and Tomasz Imielinski",
	booktitle     = "{Proceedings of the 19th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD89/P174.PDF",
	doi           = "10.1145/67544.66942",
	pages         = "174--183",
	title         = "{Relational Specifications of Infinite Query Answers}",
	year          = 1989,
}