Joerg Abke Erich Barke A New Placement Method for Direct Mapping into LUT-Based FPGAs. 27-36 2001 conf/fpl/2001 FPL http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2147&spage=0027 db/conf/fpl/fpl2001.html#AbkeB01