@inproceedings{PODS-1999-BusscheW,
	author        = "Jan Van den Bussche and Emmanuel Waller",
	booktitle     = "{Proceedings of the 18th Symposium on Principles of Database Systems}",
	cdrom         = "DiSC2_1/out/papers/pods/typeinferenceinjaem.pdf",
	doi           = "10.1145/303976.303984",
	isbn          = "1-58113-062-7",
	pages         = "80--90",
	publisher     = "{ACM Press}",
	title         = "{Type Inference in the Polymorphic Relational Algebra}",
	year          = 1999,
}