참고문헌

1. Commission of The European Communities, "Commission Staff Working Paper : Digital Rights Background. Systems, Assesment", 2002.02
2. 강호갑, "DRM 최신 국제표준 기술사양 분석 및 세계유명제품 동향과 전망에 관한 연구", 2004
3. Interoperability of data in e-commerce systems, http://www.indecs.org/
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9. Wikipedia http://www.wikipedia.org