SerrĂ£o, C., Marques, J., Dias, J. & Delgado, J. (2006). Open-Source Software as a Driver for Digital Content E-Commerce and DRM Interoperability. In Leonardo Chiariglione, Wen Gao (Ed.), Proc of IPDM06 - The Europe-China Conference on Intellectual Property in Digital Media, Shangai, China.: Peking University.