Bert Vanhooff Stefan Van Baelen Aram Hovsepyan Wouter Joosen Yolande Berbers Towards a Transformation Chain Modeling Language. 39-48 2006 conf/samos/2006 SAMOS http://dx.doi.org/10.1007/11796435_6 db/conf/samos/samos2006.html#VanhooffBHJB06