@inproceedings{STOC-1977-Constable,
	author        = "Robert L. Constable",
	booktitle     = "{Proceedings of the Ninth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800105.803417",
	pages         = "269--285",
	publisher     = "{ACM}",
	title         = "{On the Theory of Programming Logics}",
	year          = 1977,
}