Yung Bok Kim Jong Yong Kim Performance Analysis of User Interface for the Disabled in Real-Time Ubiquitous Information Network. 926-929 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3118&spage=926 2004 conf/icchp/2004 ICCHP db/conf/icchp/icchp2004.html#KimK04a