@inproceedings{LICS-2008-HagueMOS,
	author        = "Matthew Hague and Andrzej S. Murawski and C.-H. Luke Ong and Olivier Serre",
	booktitle     = "{Proceedings of the 23rd Annual IEEE Symposium on Logic in Computer Science}",
	doi           = "10.1109/LICS.2008.34",
	isbn          = "978-0-7695-3183-0",
	pages         = "452--461",
	publisher     = "{IEEE Computer Society}",
	title         = "{Collapsible Pushdown Automata and Recursion Schemes}",
	year          = 2008,
}