1. About Sifter(n.d.), available at: http://sifter.indiana.edu/about.shtml (accessed 12 September 2001).
2. “Going Where the Questions Are”
3. Automated Digital Libraries
4. Ask A Librarian(n.d.), available at: www.earl.org.uk/ask/ (accessed 12 September 2001).
5. Barry, W. and Barbara, R. (1999), “Creating personal digital libraries”, inProceedings of the Computers in Libraries Conference, USA, March 8‐14, pp. 191‐8.