CHORIANOPOULOS K., BARRIA J., REGNER T., PITT J.: 'Cross Media Digital Rights Management for Online Music Stores', AUTOMATED PRODUCTION OF CROSS MEDIA CONTENT FOR MULTI-CHANNEL DISTRIBU TION, 2005. AXMEDIS 2005. FIRST INTERNATIONAL CONFERENCE ON FLORENCE, ITALY 30-02 NOV. 2005, PISCATAWAY, NJ, USA,IEEE, 30 November 2005 (2005-11-30) - 2 November 2005 (2005-11-02), pages 257 - 260, XP010892461, ISBN: 978-0-7695-2348-4, DOI: 10.1109/AXMEDIS.2005.16