@inproceedings{POPL-2008-CastagnaGP,
	author        = "Giuseppe Castagna and Nils Gesbert and Luca Padovani",
	booktitle     = "{Proceedings of the 35th Symposium on Principles of Programming Languages}",
	doi           = "10.1145/1328438.1328471",
	editor        = "George C. Necula and Philip Wadler",
	isbn          = "978-1-59593-689-9",
	pages         = "261--272",
	publisher     = "{ACM}",
	title         = "{A theory of contracts for web services}",
	year          = 2008,
}