Albert Cohen Sylvain Girbal Olivier Temam A Polyhedral Approach to Ease the Composition of Program Transformations. 292-303 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3149&spage=292 2004 conf/europar/2004 Euro-Par db/conf/europar/europar2004.html#CohenGT04