Akihito Nagata Naoki Kobayashi Akinori Yonezawa Region-Based Memory Management for a Dynamically-Typed Language. 229-245 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3302&spage=229 2004 conf/aplas/2004 APLAS db/conf/aplas/aplas2004.html#NagataKY04