Fernando Silva Parreiras Jeff Z. Pan Uwe Aßmann Jakob Henriksson Proceedings of the 1st International Workshop on Transforming and Weaving Ontologies in Model Driven Engineering TWOMDE 2008, Toulouse, France, September 28, 2008 TWOMD CEUR-WS.org CEUR Workshop Proceedings 395 2008 db/conf/models/twomd2008.html