This paper presents some investigative work about several copyright technology protection measures used in many electronic reserve systems by many academic and college libraries at home and abroad， including:overview of current status,analyse their features and function，and put out of several typical copyright technology protection measuressome suggestions on adopting copyright technology protection measures.
曾婷,肖燕. 电子教参系统服务著作权技术保护措施调查研究*[J]. 现代图书情报技术, 2004, 20(9): 15-20.
Zeng Ting,Xiao Yan. Investigation on Copyright Technology Protection Measures in Electronic Reserve System Service. New Technology of Library and Information Service, 2004, 20(9): 15-20.
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