Thomas Aschauer Gerd Dauenhauer Wolfgang Pree Towards a generic architecture for multi-level modeling. 121-130 2009 WICSA/ECSA http://dx.doi.org/10.1109/WICSA.2009.5290798 conf/wicsa/2009 db/conf/wicsa/wicsa2009.html#AschauerDP09