1Steve Lawtence & C. lee Giles. Accessibility of Information on the Web.Nature [J]. 1999. 400 :107 - 109
2Harry M. Kibirige & Lisa Depalo. The Internetas a Souse of Academic Research Information:findings of two pilot studies [ J ]. Information Technology & Libraries. 2000,19(1): 11 - 16
3Joseph Janes & Chazles R. McClure. The Web as a Reference Tool: comparison with traditional source[ J]. Pubilc Libraries, 1999,38:30 -39
5Thornes J.Waldhart, et al. Provision of Local Assisted Access to Selected Internet Resources by ARL Academic Libraries[J]. Journal of Academic Librarianship, 2000, 26 (2) : 100 - 109
6Gregory F. Pratt, et al. Guideline for Internet Resource Selection[J]. College & Research Libraries News, 1996, 57 : 134 - 135