Owen Noel Newton Fernando Kazuya Adachi Uresh Chanaka Duminduwardena Makoto Kawaguchi Michael Cohen Audio Narrowcasting and Privacy for Multipresent Avatars on Workstations and Mobile Phones. 73-87 2006 89-D IEICE Transactions 1 http://dx.doi.org/10.1093/ietisy/e89-d.1.73 db/journals/ieicet/ieicet89d.html#FernandoADKC06