Jean-Marie Favre Foundations of Meta-Pyramids: Languages vs. Metamodels - Episode II: Story of Thotus the Baboon1. 2004 conf/dagstuhl/2004P4101 Language Engineering for Model-Driven Software Development http://drops.dagstuhl.de/opus/volltexte/2005/21 db/conf/dagstuhl/P4101.html#Favre04a