Claudine Conrado Milan Petkovic Michiel van der Veen Wytse van der Velde Controlled Sharing of Personal Content Using Digital Rights Management. 2006 38 Journal of Research and Practice in Information Technology 1 http://www.jrpit.acs.org.au/jrpit/JRPITVolumes/JRPIT38/JRPIT38.1.85.pdf db/journals/acj/acj38.html#ConradoPVV06