1. Rasch, G. Objektivitet i samfundsvidenskaberne et metodeproblem. Paper presented at the University of Copenhagen, 1972 (mimeo).
2. Masters, G. N. A Rasch model for rating scales. Doctoral dissertation, University of Chicago, 1980.
3. Wright, B. D. & Masters, G. N. The measurement of knowledge and attitude.Research Memorandum No. 30, MESA Psychometric Laboratory, Department of Education, University of Chicago, 1981.
4. Masters, G. N. & Wright, B. D. A model for partial credit scoring.Research Memorandum No. 31, MESA Psychometric Laboratory, Department of Education, University of Chicago, 1981.