@inproceedings{STOC-1973-Greibach,
	author        = "Sheila A. Greibach",
	booktitle     = "{Proceedings of the Fifth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800125.804031",
	pages         = "20--28",
	publisher     = "{ACM}",
	title         = "{Jump PDA’s, Deterministic Context-Free Languages Principal AFDLs and Polynomial Time Recognition-Extended Abstract}",
	year          = 1973,
}