@inproceedings{POPL-2004-AnconaZ,
	author        = "Davide Ancona and Elena Zucca",
	booktitle     = "{Proceedings of the 31st Symposium on Principles of Programming Languages}",
	doi           = "10.1145/964001.964027",
	editor        = "Neil D. Jones and Xavier Leroy",
	isbn          = "1-58113-729-X",
	pages         = "306--317",
	publisher     = "{ACM}",
	title         = "{Principal typings for Java-like languages}",
	year          = 2004,
}