Petros Daras Oscar Mayora-Ibarra User Centric Media - First International Conference, UCMedia 2009, Venice, Italy, December 9-11, 2009, Revised Selected Papers 40 2010 http://dx.doi.org/10.1007/978-3-642-12630-7 978-3-642-12629-1 UCMedia Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering Springer db/conf/ucmedia/ucmedia2009.html