@inproceedings{WIA-1999-GiammarresiPW,
	author        = "Dora Giammarresi and Jean-Luc Ponty and Derick Wood",
	booktitle     = "{Revised Papers of the Fourth International Workshop on Implementing Automata}",
	doi           = "10.1007/3-540-45526-4_9",
	isbn          = "3-540-42812-7",
	pages         = "91--100",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Thompson Digraphs: A Characterization}",
	volume        = 2214,
	year          = 1999,
}