Bert Robben Wouter Joosen Frank Matthijs Bart Vanhaute Pierre Verbaeten A Metaobject Protocol for Correlate. 367-368 http://link.springer.de/link/service/series/0558/bibs/1543/15430367.htm 1998 conf/ecoopw/1998 ECOOP Workshops db/conf/ecoopw/ecoopw98.html#RobbenJMVV98a