Alexander Felfernig Gerhard Friedrich Dietmar Jannach Markus Stumptner Consistency-based diagnosis of configuration knowledge bases. 213-234 2004 152 Artif. Intell. 2 http://dx.doi.org/10.1016/S0004-3702(03)00117-6 db/journals/ai/ai152.html#FelfernigFJS04