The kernel of Digital Rights Management (DRM) technologies is to lock and limit digital content and its distributing approach in order to prevent digital products from unauthorized copy by security and encryption techniques copyright protection of e-book could be settled by applying DRM technologies in digital library.
张长安,柏丽娜. DRM技术及其在数字图书馆中的应用[J]. 现代图书情报技术, 2003, 19(3): 83-85.
Zhang Changan,Bai Lina. DRM Technologies and Its Application in Digital Library. New Technology of Library and Information Service, 2003, 19(3): 83-85.