1. Andrich, D. (1978). A rating formulation for ordered response categories. Psychometrika 43, 561–573.
2. Cox, D.R. (1970). The Analysis of Binary Data. London: Methuen.
3. Fischer, G.H. (1972). A measurement model for the effect of mass-media. Acta Psychologica 36, 207–220.
4. Fischer, G.H. (1974). Einführung in die Theorie psychologischer Tests. [Introduction to Mental Test Theory. In German.] Berne: Huber.
5. Fischer, G.H. (1976). Some probabilistic models for measuring change. In D.N.M. de Gruijter and L.J. Th. van der Kamp (Eds), Advances in Psychological and Educational Measurement (pp. 97–110 ). New York: Wiley.