@inproceedings{STOC-1977-HarelMP,
	author        = "David Harel and Albert R. Meyer and Vaughan R. Pratt",
	booktitle     = "{Proceedings of the Ninth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800105.803416",
	pages         = "261--268",
	publisher     = "{ACM}",
	title         = "{Computability and Completeness in Logics of Programs}",
	year          = 1977,
}