1. Contribution to the Study of Subjective Probability. I
2. The Discovery of Conservation of Energy. London: Hutchinson Educational, 1974.
3. The gene in search of an identity
4. Perception of Randomness. Doctoral dissertation (in Hebrew with English abstract). Jerusalem: The Hebrew University, 1975.
5. ‘The perception of randomness.’ In Proceeding of the Fifth International Conference for the Psychology of Mathematics Education (pp. 222–229). Grenoble, France, 1981.