@inproceedings{ICLP-2012-Hadjichristodoulou,
	author        = "Spyros Hadjichristodoulou",
	booktitle     = "{Technical Communications of the 28th International Conference on Logic Programming}",
	doi           = "10.4230/LIPIcs.ICLP.2012.451",
	isbn          = "978-3-939897-43-9",
	pages         = "451--457",
	publisher     = "{Schloss Dagstuhl — Leibniz-Zentrum für Informatik}",
	series        = "{Leibniz International Proceedings in Informatics}",
	title         = "{A Gradual Polymorphic Type System with Subtyping for Prolog}",
	volume        = 17,
	year          = 2012,
}