Liping Mu Terje Gjøsæter Andreas Prinz 0001 Merete Skjelten Tveit Specification of modelling languages in a flexible meta-model architecture. 302-308 2010 ECSA Companion Volume https://doi.org/10.1145/1842752.1842807 conf/ecsa/2010c db/conf/ecsa/ecsa2010c.html#MuGPT10