Kresten Krab Thorup Mads Torgersen Unifying Genericity - Combining the Benefits of Virtual Types and Parameterized Classes. 186-204 http://link.springer.de/link/service/series/0558/bibs/1628/16280186.htm 1999 conf/ecoop/1999 ECOOP db/conf/ecoop/ecoop99.html#ThorupT99