3Carol Tenopir. Virtual Reference Services in a Real World. Library Journal 2001(12):38
4Soo Young Rieh. Changing Reference Service Environmerit: A Review of Perspectives from Managers,Librarians, and Users. The Journal of American Librarianship,1999(3) : 178-186
5Chris Ferguson, shaking the conceptual foundation, too:integrating research and technology support for the nex tgeneration of information service. College and research libraries,2000(4) :300-311
6http: lcweb. loc. gov/rr/digiref
7Frequently Asked Questions. http://libraries mit.edu/ahout/fag, html
