1. Drexel University, School of Library and Information Science; Franklin Institute Research Laboratories. Individualized Instruction for Data Access (IIDA), Quarterly Report No. 5. Phildelphia, PA: Drexel University; June 1979.
2. Drexel University, School of Library and Information Science; Franklin Institute Research Laboratories. Individualized Instruction for Data Access (IIDA), Quarterly Report No. 4. Philadelphia, PA: Drexel University; March 1979.
3. ; , “Measurement of User Performance.” Paper presented at University of Illinois, 17th Clinic on Library Applications of Data Processing, Urbana, IL; April 20–23, 1980.
4. “Rhythms of Dialogue in Human-Computer Conversation.” Ph.D. dissertation, Ohio State University, Columbus, OH, 1975.