1. See http://www.lib.virginia.edu/arlstats/ 93instvars.html,94instvars.html;http://arl.cni.org.
2. See http://arl.cni.org, Access to Research Resources
3. GIS and Research Libraries, One Perspective;Cline;Information Technology and Libraries,1995
4. GIS in Academic Libraries: A Managerial Perspective;Boissé;Journal of Academic Librarianship,1995