James Hoekstra. The problem of retrieval of information from a specialized data base. In John H. Esbin, Lynn Bellamy, M. Lloyd Edwards, Bill Decker, Al Roberts, Anne Adair, editors, Proceedings of the 5th annual ACM SIGUCCS conference on User services, Kansas City, Missouri, USA, November 6-9, 1977. pages 244-245, ACM, 1977. [doi]
Abstract is missing.