@inproceedings{ParTor09,
	Abstract = {-},
	Affiliation = {icr},
	Author = {Xavier Parent and Leendert van der Torre},
	Booktitle = {9th De Morgan Workshop on Deontic Logic},
	Date-Added = {2011-11-16 16:03:59 +0100},
	Date-Modified = {2011-11-16 16:03:59 +0100},
	Month = dec,
	Title = {Input/output logics},
	Year = 2009}