1. Ashby, W. R. Measuring the internal informational exchange in a system. Cybernetica, 1965, 8, 5–22.
2. Attneave, F. Applications of information theory to psychology. New York: Holt, 1959.
3. Bishop, Y. M., Fienberg, S. E., and Holland, P. W. Discrete multivariate analysis: Theory and practice. Cambridge, Mass.: MIT Press, 1975.
4. Bock, H. H. Explorative Datenanalyse. In N. Victor, W. Lehmacher, and W. van Eimeren (Eds.), Explorative Datenanalyse. Berlin: Springer, 1980.
5. Bradley, J. V. Distribution-free statistical tests. Englewood Cliffs, N.J.: Prentice-Hall, 1968.