Julio Abascal Daniel Cagigas Nestor Garay-Vitoria Luis Gardeazabal Mobile Interface for a Smart Wheelchair. 373-377 2002 conf/mhci/2002 Mobile HCI http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2411&spage=0373 db/conf/mhci/mhci2002.html#AbascalCGG02