@inproceedings{POPL-1997-FradetM,
	author        = "Pascal Fradet and Daniel Le Métayer",
	booktitle     = "{Conference Record of the 24th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/263699.263706",
	editor        = "Peter Lee and Fritz Henglein and Neil D. Jones",
	isbn          = "0-89791-853-3",
	pages         = "27--39",
	publisher     = "{ACM Press}",
	title         = "{Shape Types}",
	year          = 1997,
}