@inproceedings{LICS-2010-Otto,
	author        = "Martin Otto",
	booktitle     = "{Proceedings of the 25th Annual IEEE Symposium on Logic in Computer Science}",
	doi           = "10.1109/LICS.2010.14",
	isbn          = "978-0-7695-4114-3",
	pages         = "11--20",
	publisher     = "{IEEE Computer Society}",
	title         = "{Highly Acyclic Groups, Hypergraph Covers and the Guarded Fragment}",
	year          = 2010,
}