@inproceedings{LICS-2008-Duris,
	author        = "David Duris",
	booktitle     = "{Proceedings of the 23rd Annual IEEE Symposium on Logic in Computer Science}",
	doi           = "10.1109/LICS.2008.12",
	isbn          = "978-0-7695-3183-0",
	pages         = "418--427",
	publisher     = "{IEEE Computer Society}",
	title         = "{Hypergraph Acyclicity and Extension Preservation Theorems}",
	year          = 2008,
}