@inproceedings{STOC-1969-MannaP,
	author        = "Zohar Manna and Amir Pnueli",
	booktitle     = "{Proceedings of the First Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800169.805434",
	pages         = "201--210",
	publisher     = "{ACM}",
	title         = "{Formalization of Properties of Recursively Defined Functions}",
	year          = 1969,
}