MultiJava: modular open classes and symmetric multiple dispatch for Java.

Curtis Clifton Gary T. Leavens Craig Chambers Todd D. Millstein MultiJava: modular open classes and symmetric multiple dispatch for Java. 130-145 2000 OOPSLA http://doi.acm.org/10.1145/353171.353181 db/conf/oopsla/oopsla2000.html#CliftonLCM00