@inproceedings{STOC-1969-Savitch,
	author        = "Walter J. Savitch",
	booktitle     = "{Proceedings of the First Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800169.805439",
	pages         = "247--248",
	publisher     = "{ACM}",
	title         = "{Deterministic Simulation of Non-Deterministic Turing Machines}",
	year          = 1969,
}