Satoshi Nakamura Masahiko Tsukamoto Shojiro Nishio A Method of Key Input with Two Mice. 13-20 2001 conf/iswc/2001 ISWC http://csdl.computer.org/comp/proceedings/iswc/2001/1318/00/13180013abs.htm db/conf/iswc/iswc2001.html#NakamuraTN01