Carsten Sinz Albert Haag Nina Narodytska Toby Walsh Esther Gelle Mihaela Sabin Ulrich Junker Barry O'Sullivan Rick Rabiser Deepak Dhungana Paul Grünbacher Klaus Lehner Christian Federspiel Daniel Naus 78-90 2007 22 IEEE Intelligent Systems 1 http://doi.ieeecomputersociety.org/10.1109/MIS.2007.6 db/journals/expert/expert22.html#SinzHNWGSJORDGLFN07