1. Aczél, J.,Functions partially constant on rings of sets. C.R. Math. Rep. Acad. Sci. Canada2 (1980), 159–164.
2. Aczél, J. andDaróczy, Z.,On measures of information and their characterizations. Academic Press, New York, 1975.
3. Davidson, K. R. andNg, C. T.,Information measures and cohomology. Utilitas Math.20 (1981), 27–34.
4. Ebanks, B. R.,The general symmetric solution of a functional equation arising in the mixed theory of information. C.R. Math. Rep. Acad. Sci. Canada4 (1982), 195–200.
5. Ebanks, B. R.,Generalized characteristic equation of branching information measures. Aequationes Math.37 (1989), 162–178.