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2. Glass, Gene V.: 1977, ?Integrating Findings: The Meta-Analysis of Research?, Review of Research in Education 5, 251?379.
3. Lehrer, Keith and Wagner, Carl: 1981, Rational Consensus in Science and Society, D. Reidel, Dordrecht, Holland.
4. Maccoby, E. E. and Jacklin, C. N.: 1974, The Psychology of Sex. Differences, Stanford University Press, Stanford, California, Cited in Glass, 1977.
5. Suppes, P.: 1961, ?Models of Data?, reprinted in Suppes, P. 1969, Studies in the Methodology and Foundations of Science, D. Reidel, Dordrecht, Holland.