Mi Gyung Cho Am Sok Oh Byung kwan Lee A Feature-Based Algorithm for Recognizing Gestures on Portable Computers. 33-40 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3043&spage=33 2004 conf/iccsa/2004-1 ICCSA (1) db/conf/iccsa/iccsa2004-1.html#ChoOL04