@inproceedings{POPL-1991-AbadiP,
	author        = "Martín Abadi and Gordon D. Plotkin",
	booktitle     = "{Conference Record of the 18th Annual Symposium on Principles of Programming Languages}",
	doi           = "10.1145/99583.99626",
	editor        = "David S. Wise",
	isbn          = "0-89791-419-8",
	pages         = "323--332",
	publisher     = "{ACM Press}",
	title         = "{A Logical View of Composition and Refinement}",
	year          = 1991,
}