Aiden R. Doherty Zhengwei Qiu Colum Foley Hyowon Lee Cathal Gurrin Alan F. Smeaton Green multimedia: informing people of their carbon footprint through two simple sensors. 441-450 2010 ACM Multimedia http://doi.acm.org/10.1145/1873951.1874015 conf/mm/2010 db/conf/mm/mm2010.html#DohertyQFLGS10