@inproceedings{FLOPS-2014-NaR,
	author        = "Hyunik Na and Sukyoung Ryu",
	booktitle     = "{Proceedings of the 12th International Symposium on Functional and Logic Programming}",
	doi           = "10.1007/978-3-319-07151-0_15",
	isbn          = "978-3-319-07150-3",
	pages         = "238--252",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A New Formalization of Subtyping to Match Subclasses to Subtypes}",
	volume        = 8475,
	year          = 2014,
}