1. Improvement of the selectivity of citation indexes to science literature through inclusion of citation relationship indicators
2. Selective Dissemination of Biomedical Information: A Series of Studies and a Model System
3. “A Statistical Procedure for Evaluating the Importance of Scientific Papers.” Ph.D. dissertation, University of Chicago, 1974.
4. “The Relationship between Intra-Document Citation Location and Citation Level.” Ph.D. dissertation, University of Illinois, 1970.
5. “Citation Patterns: Mechanistically Identifiable Characteristics of Citation Links.” M. A. thesis, University of Chicago, 1973.