@inproceedings{ICALP-1978-FortuneHS,
	author        = "Steven Fortune and John E. Hopcroft and Erik Meineche Schmidt",
	booktitle     = "{Proceedings of the Fifth Colloquium on Automata, Languages and Programming}",
	doi           = "10.1007/3-540-08860-1_17",
	isbn          = "3-540-08860-1",
	pages         = "227--240",
	publisher     = "{Springer-Verlag}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{The Complexity of Equivalence and Containment for Free Single Variable Program Schemes}",
	volume        = 62,
	year          = 1978,
}