Arvid Engström Mattias Esbjörnsson Oskar Juhlin Mark Perry Producing collaborative video: developing an interactive user experience for mobile tv. 115-124 2008 UXTV http://doi.acm.org/10.1145/1453805.1453828 conf/uxtv/2008 db/conf/uxtv/uxtv2008.html#EngstromEJP08