Beate Ritterbach Support for Value Types in an Object-Oriented Programming Language. 9-23 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3263&spage=9 2004 conf/jit/2004 Net.ObjectDays db/conf/jit/netobject2004.html#Ritterbach04