5[1]W3C Workshop on Digital Rights Management. Jan 2001 http ://www. w3. org/2000/12/drm-ws/
6[2]Renato Iannella, Open Digital Rights Management A Position Paper for the W3C DRM Workshop. www. w3. org/2000/12/drm-ws/pp/iprsystems-iannella. pdf
7[3]AAP DRM for eBooks: Publishers' Requirements. 2000 http://www. publishers. org/home/drm. pdf
8[4]WIPO COPYRIGHT TREATY, December 20, 1996 http:// www. loc. gov/copyright/wipo/treaty1. html
9[5]The Digital Millennium Copyright Act. Oct. 1998 http://www.loc. gov/copyright/legislation/hr2281. pdf.
10[6]The EC directive on the harmonisation of copyright and neigh bouring rights in the information society (copyright directive) (May 1999)http://europa. eu. int/comm/internal-marketen/intprop/intprop/news/copy2en. pdf