@inproceedings{STOC-1969-Thatcher,
	author        = "James W. Thatcher",
	booktitle     = "{Proceedings of the First Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800169.805427",
	pages         = "129--142",
	publisher     = "{ACM}",
	title         = "{Transformations and Translations from the Point of View of Generalized Finite Automata Theory}",
	year          = 1969,
}