Kwangjin Hong Keechul Jung Advanced Paper Document in a Projection Display. 81-87 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3332&spage=81 2004 conf/pcm/2004-2 PCM (2) db/conf/pcm/pcm2004-2.html#HongJ04