Janis Barzdins Audris Kalnins Edgars Rencis Sergejs Rikacovs Model Transformation Languages and Their Implementation by Bootstrapping Method. 130-145 2008 conf/birthday/2008trakhtenbrot Pillars of Computer Science http://dx.doi.org/10.1007/978-3-540-78127-1_8 db/conf/birthday/trakhtenbrot2008.html#BarzdinsKRR08