1. Stonebraker, M., and J. Kalash : “TIMBER: a sophisticated relational browser”. Proceedings for the Annual Meeting on Engineering Applications, IEEE Computer Society Press, May 83
2. Tou, F.N., Williams, M.D., Fikes, R., Henderson, A., and T. Malone: “RABBIT: An intelligent database assistant”. Proceedings of the National Conference of the American Association of Artificial Intelligence, August 1982
3. Wilson, G.A. : “Multi-media cooperative person/machine interaction”. Technical Report, Computer Corporation of America, Cambridge.
4. Wilson, G.A. : “Smart user interfaces for the distributed information environment”. Technical Report, Advanced Information & Decision Systems, Mountain View.
5. Robertson, G., Newell, A., and Ramakrishna, k. : “ZOG: a man-machine communication philosophy”. Technical Report, Carnegie-Mellon University Computer Science Department, August, 1977.