Ludwik Kuzniarz Lars Pareto Jean-Louis Sourrouille Miroslaw Staron Third Intenational Workshop on Quality in Modeling. 271-274 2007 MoDELS Workshops http://dx.doi.org/10.1007/978-3-540-69073-3_28 conf/models/2007w db/conf/models/models2007w.html#KuzniarzPSS07