Nobuchika Sakata Takeshi Kurata Takekazu Kato Masakatsu Kourogi Hideaki Kuzuoka WACL: Supporting Telecommunications Using Wearable Active Camera with Laser Pointer. 53-56 2003 conf/iswc/2003 ISWC http://csdl.computer.org/comp/proceedings/iswc/2003/2034/00/20340053abs.htm db/conf/iswc/iswc2003.html#SakataKKKK03