4Naomi Korn. Guide to Intellectual Property Rights and Other Legal Issues. [2006 - 04 - 20]. http ://www. minervaeurope.org/publications/guideipr 1-0. pdf 被引量：1
5Digital Library Federation. Acquiring Copyright Permission to Digitize and Provide Open Access to Books. [2006 - 03 - 20].http ://www. clir. org/pubs/reports/pub 134/pub 134col. pdf 被引量：1
6Carnegie Mellon University Libraries. Survey Results: The Random Sample Feasibility Study. [ 2006- 04- 10].http ://www. library.cmu. edu/sm. html 被引量：1
7Carnegie Mellon University Libraries. The Fine and Rare Book Study. [ 2006 - 04 - 01 ]. http://www.library. cmu. edu/sm. html 被引量：1
8The National Science Foundation (NSF). The Million Book Project Study. [ 2006 - 05 - 01 ]. http ://www. nsf. gov/news/index .jsp 被引量：1
