@inproceedings{DLT-2009-FriscoI,
	author        = "Pierluigi Frisco and Oscar H. Ibarra",
	booktitle     = "{Proceedings of the 13th International Conference on Developments in Language Theory}",
	doi           = "10.1007/978-3-642-02737-6_19",
	isbn          = "978-3-642-02736-9",
	pages         = "240--251",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{On Stateless Multihead Finite Automata and Multihead Pushdown Automata}",
	volume        = 5583,
	year          = 2009,
}