Extras - The "Virtual Library": Sources, Services and TrendsBy Holly M. Riccio, Published on September 16, 2001
The Virtual Library: Future Trends - Cindy L. Chick (Powerpoint)
The Virtual Library: Past, Present and Future: A Selective Bibliography, Compiled by Holly M. Riccio,Links - Virtual Reference
General Web Sites
Discussion Group: Yahoo! Groups livereference
Information Today: April 2001, "Providing Virtual Reference Service"