1. , , and , “Free Text Word Retrieval and Scientist Indexing: Performance Profiles and Costs,” Journal of Documentation, V27n3, p167 (Sept. 1971).
2. Machine-Aided Indexing, Defense Documentation Center Technical Progress Reports for June 1969 (AD696200), Nov. 1970 (AD716200), Dec. 1971 (AD733800), July 1972 (AD746300), and Dec. 1972 (AD754400 by C. R. Jacobs); Cameron Station, Alexandria, VA 22314.
3. Natural Language Data Base, Defense Documentation Center Technical Progress Report for May 1972 (AD743600).
4. Conceptual Indexing and Retrieval of Current Research Records: An Analysis of Problems and Progress in a Large Scale Information System
5. Editor, Annual Review of Information Science and Technology, Vol. 8, Chapter 2, ASIS, Washington, DC (1973).