@inproceedings{ESEC-1991-Parisi-PresicceP,
	author        = "Francesco Parisi-Presicce and Alfonso Pierantonio",
	booktitle     = "{Proceedings of the Third European Software Engineering Conference}",
	doi           = "10.1007/3540547428_58",
	editor        = "Axel van Lamsweerde and Alfonso Fugetta",
	isbn          = "3-540-54742-8",
	pages         = "364--379",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{An Algebraic View of Inheritance and Subtyping in Object Oriented Programming}",
	volume        = 550,
	year          = 1991,
}