Alexander Felfernig Markus Mairitsch Monika Mandl Monika Schubert Erich Teppan Utility-Based Repair of Inconsistent Requirements. 162-171 2009 IEA/AIE http://dx.doi.org/10.1007/978-3-642-02568-6_17 conf/ieaaie/2009 db/conf/ieaaie/ieaaie2009.html#FelfernigMMST09