@inproceedings{CSL-2008-Katsumata,
	author        = "Shin-ya Katsumata",
	booktitle     = "{Proceedings of the 17th EACSL Annual Conference / 22nd International Workshop on Computer Science Logic}",
	doi           = "10.1007/978-3-540-87531-4_21",
	isbn          = "978-3-540-87530-7",
	pages         = "278--292",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{A Characterisation of λ Definability with Sums Via TT-Closure Operators}",
	volume        = 5213,
	year          = 2008,
}