@inproceedings{DLT-2002-IbarraDS,
	author        = "Oscar H. Ibarra and Zhe Dang and Zhi-Wei Sun",
	booktitle     = "{Revised Papers of the Seventh International Conference on Developments in Language Theory}",
	doi           = "10.1007/3-540-45005-X_29",
	isbn          = "3-540-40431-7",
	pages         = "326--338",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Safety Verification for Two-Way Finite Automata with Monotonic Counters}",
	volume        = 2450,
	year          = 2002,
}