@inproceedings{STOC-1975-Pratt,
	author        = "Terrence W. Pratt",
	booktitle     = "{Proceedings of the Seventh Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800116.803766",
	pages         = "167--176",
	publisher     = "{ACM}",
	title         = "{Four Models for the Analysis of Optimization of Program Control Structures}",
	year          = 1975,
}