1. The JISC user behaviour monitoring and evaluation framework;Banwell;Journal of Documentation,2004
2. Perspectives on user satisfaction surveys;Cullen;Library Trends,2001
3. The use of user satisfaction survey method in digital resource evaluation;Li;Journal of Academic Libraries,2007
4. Ober, J. (2004). The California Digital Library. D-Lib Magazine, 5, 3.
5. Unified cooperative purchase service portal of CALIS. http://dbinfo.calis.edu.cn (accessed May.10, 2010).