Salvador Barrera Piperakis Romanos Suguru Saito Hiroki Takahashi Masayuki Nakajima WARAJI: Foot-Driven Navigation Interfaces for Virtual Reality Applications. 1-7 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3333&spage=1 2004 conf/pcm/2004-3 PCM (3) db/conf/pcm/pcm2004-3.html#BarreraRSTN04