Satoshi Nakamura Sooyeon Oh Mitsuru Minakuchi Rieko Kadobayashi Content Browsing by Walking in Real and Cyber Spaces. 1062-1065 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3399&spage=1062 2005 conf/apweb/2005 APWeb db/conf/apweb/apweb2005.html#NakamuraOMK05