@inproceedings{CSL-2006-BonfanteKMO,
	author        = "Guillaume Bonfante and Reinhard Kahle and Jean-Yves Marion and Isabel Oitavem",
	booktitle     = "{Proceedings of the 15th EACSL Annual Conference / 20th International Workshop on Computer Science Logic}",
	doi           = "10.1007/11874683_14",
	isbn          = "3-540-45458-6",
	pages         = "212--224",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Towards an Implicit Characterization of NCk}",
	volume        = 4207,
	year          = 2006,
}