1. The “Generality” Effect and the Retrieval Evaluation for Large Collections, Journal of the ASIS, 23 (No. 1) (January-February 1972).
2. “Comparative Effects of Titles, Abstracts, and Full Text on Relevance Judgments,” Proceedings of the 1969 ASIS Annual Conference, pp. 293–299 (October 1969).
3. , and , The User Interface for the Intrex Retrieval System, in Interactive Bibliographic Search: The User Computer Interface, (ed.), AFIPS Press, Montvale, N.J., pp. 159–201 (1971).
4. Project Intrex Semiannual Activity Reports, Massachusetts Institute of Technology, esp. 15 March 1970, pp. 31–34 15 September 1971, pp. 29–47 15 March 1972, pp. 20–41.