Armin Windschiegl Paul Zuber Walter Stechele Exploiting Metal Layer Characteristics for Low-Power Routing. 55-64 2002 conf/patmos/2002 PATMOS http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2451&spage=0055 db/conf/patmos/patmos2002.html#WindschieglZS02