@inproceedings{PODS-1989-HullS,
	author        = "Richard Hull and Jianwen Su",
	booktitle     = "{Proceedings of the Eighth Symposium on Principles of Database Systems}",
	cdrom         = "['journals/anthology/cd1-3:PODS89/P347.PDF', 'journals/anthology/dvd1:text/1-3/PODS89/P347.PDF']",
	doi           = "10.1145/73721.73755",
	isbn          = "0-89791-308-6",
	pages         = "347--359",
	publisher     = "{ACM Press}",
	title         = "{Untyped Sets, Invention, and Computable Queries}",
	year          = 1989,
}