@inproceedings{TLCA-1999-Zwanenburg,
	author        = "Jan Zwanenburg",
	booktitle     = "{Proceedings of the Fourth International Conference on Typed Lambda Calculi and Applications}",
	doi           = "10.1007/3-540-48959-2_27",
	isbn          = "3-540-65763-0",
	pages         = "381--396",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Pure Type Systems with Subtyping}",
	volume        = 1581,
	year          = 1999,
}