1. Agosti, M., Gradenigo, G. and Marchetti, P.G. (1992), “A hypertext environment for interacting with large textual databases”, Information Processing and Management, Vol. 28 No. 3, pp. 371‐87.
2. Bates, M.J. (1986), “Subject access in online catalogs: a design model”, Journal of the American Society for Information Science, Vol. 37 No. 6, pp. 357‐76.
3. Bates, M.J. (1990), “Design for a subject search interface and online thesaurus for a very large record management database”, in Henderson, D. (Ed.), Proceedings of the 53rd Annual Meeting of the American Society for Information Science, Toronto, Ontario,4‐8 November, Learned Information, Medford, NJ, pp. 20‐8.
4. Bates, M.J. (1998), “Indexing and access for digital libraries and the internet: human, database, and domain factors”, Journal of the American Society for Information Science, Vol. 49 No. 13, pp. 1185‐205.
5. Beaulieu, M. (1997), “Experiments of interfaces to support query expansion”, Journal of Documentation, Vol. 53 No. 1, pp. 8‐19.