1. F. Barbic and F. Rabitti, “The Type Concept in Office Document Retrieval,,” Proc. VLDB Conference, Stockholm (August 21–23, 1985).
2. J. Barnett, “Computational Methods for a Mathematical Theory of Evidence,” Proc. 7th International Joint Conference on Artificial Intelligence, Vancouver, B.C., pp. 868–875 (1981).
3. N.J. Belkin and W.B. Croft, “Retrieval Techniques,” Annual Review of Information Science and Technology (ARIST)
22, pp. 109–145 (1987).
4. E. Bertino, S. Gibbs, and F. Rabitti, “Query Processing in a Multimedia Document System,” ACM Transactions on Office Information Systems
6(1), pp. 1–41 (1988).
5. E. Bertino, A. Converti, H. Eirund, K. Kreplin, F. Rabitti, P. Savino, and C. Thanos, “MULTOS — A filing server for Multimedia Documents,” Proc. of the 1st EURINFO '88 Conf., pp. 435–442 (1988).