Adrián Cristal Daniel Ortega Josep Llosa Mateo Valero 10-25 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2858&spage=10 2003 conf/ishpc/2003 ISHPC db/conf/ishpc/ishpc2003.html#CristalOLV03