@inproceedings{ICALP-B-2008-BojanczykS,
	author        = "Mikolaj Bojanczyk and Luc Segoufin",
	booktitle     = "{Proceedings of the 35th International Colloquium on Automata, Languages and Programming, Track B: Logic, Semantics, and Theory of Programming}",
	doi           = "10.1007/978-3-540-70583-3_20",
	isbn          = "978-3-540-70582-6",
	pages         = "233--245",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Tree Languages Defined in First-Order Logic with One Quantifier Alternation}",
	volume        = 5126,
	year          = 2008,
}