1. Official Journal L 281, 23/11/1995 pp. 0031–0050.
2. B. Rosenblatt, B. Trippe, S. Mooney, 2001. Digital Rights Management: Business and Technology, John Wiley & Sons, ISBN: 0764548891, 1st edition, 15 November 2001.
3. eMeta corporate website at: http://www.emeta.com/
4. Digital Owl corporate website at: http://www.digitalowl.com/
5. Dot Encrypt corporate website at: http://www.dotencrypt.com/