@inproceedings{LICS-2002-GottlobK,
	author        = "Georg Gottlob and Christoph Koch",
	booktitle     = "{Proceedings of the 17th IEEE Symposium on Logic in Computer Science}",
	doi           = "10.1109/LICS.2002.1029828",
	isbn          = "0-7695-1483-9",
	pages         = "189--202",
	publisher     = "{IEEE Computer Society}",
	title         = "{Monadic Queries over Tree-Structured Data}",
	year          = 2002,
}