Our paper “A Metamodel Transformation Framework for the Migration of WebML Models to MDA” (by M. Brambilla, P. Fraternali, M. Tisi) was awarded the best paper prize at the 4th Int. Workshop on Model-Driven Web Engineering (MDWE 2008), colocated with MODELS 2008 in Toulouse, France. Proceedings are published online by the CEUR proceedings series, volume 389, pages 91-105.
A detailed implementation of the approach is described here.
Marco Brambilla 