Alexander Felfernig Gerhard Friedrich Monika Schubert Monika Mandl Markus Mairitsch Erich Teppan Plausible Repairs for Inconsistent Requirements. 791-796 2009 IJCAI http://ijcai.org/papers09/Papers/IJCAI09-136.pdf conf/ijcai/2009 db/conf/ijcai/ijcai2009.html#FelfernigFSMMT09