@inproceedings{STOC-1975-OppenC,
	author        = "Derek C. Oppen and Stephen A. Cook",
	booktitle     = "{Proceedings of the Seventh Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800116.803758",
	pages         = "107--116",
	publisher     = "{ACM}",
	title         = "{Proving Assertions about Programs that Manipulate Data Structures}",
	year          = 1975,
}