@inproceedings{CAV-2003-XieDIP,
	author        = "Gaoyan Xie and Zhe Dang and Oscar H. Ibarra and Pierluigi San Pietro",
	booktitle     = "{Proceedings of the 15th International Conference on Computer Aided Verification}",
	doi           = "10.1007/978-3-540-45069-6_8",
	isbn          = "3-540-40524-0",
	pages         = "93--105",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Dense Counter Machines and Verification Problems}",
	volume        = 2725,
	year          = 2003,
}