Belkin, N.J. & Marchetti, P.G. (1990) Determining the functionality and features of an intelligent interface to an information retrieval system. In SIGIR '90: Proceedings of the Thirteenth Annual ACM SIGIR International Conference on Research and Development in Information Retrieval. Brussels, Presses Universitaires de Bruxelles: 151-177 (refereed conference proceeding).

SIGIR '90: Proceedings of the Thirteenth Annual ACM SIGIR International Conference on Research and Development in Information Retrieval