Robert E. Filman Katharina Mehner Michael Haupt Advancing the State of the Art in Run-Time Inspection. 190-196 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3013&spage=190 2003 conf/ecoopw/2003 ECOOP Workshops db/conf/ecoopw/ecoopw2003.html#FilmanMH03