@inproceedings{CSL-2007-WeisI,
	author        = "Philipp Weis and Neil Immerman",
	booktitle     = "{Proceedings of the 16th EACSL Annual Conference / 21st International Workshop on Computer Science Logic}",
	doi           = "10.1007/978-3-540-74915-8_27",
	isbn          = "978-3-540-74914-1",
	pages         = "343--357",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Structure Theorem and Strict Alternation Hierarchy for FO2 on Words}",
	volume        = 4646,
	year          = 2007,
}