Michael Factor Assaf Schuster Konstantin Shagin Instrumentation of standard libraries in object-oriented languages: the twin class hierarchy approach. 288-300 2004 conf/oopsla/2004p OOPSLA https://doi.org/10.1145/1028976.1029000 https://doi.org/10.1145/1035292.1029000 https://www.wikidata.org/entity/Q130960299 db/conf/oopsla/oopsla2004p.html#FactorSS04