Alan Chamberlain Steve Benford Chris Greenhalgh Alastair Hampshire Nick Tandavanitj Matt Adams Amanda Oldroyd Jon Sutton Professor Tanda: greener gaming & pervasive play. 26 2007 DUX http://doi.acm.org/10.1145/1389908.1389942 conf/dux/2007 db/conf/dux/dux2007.html#ChamberlainBGHTAOS07