1. Aczél, J. (1966). Lectures on Functional Equations and Their Applications, Academic Press.
2. Erickson, G.J., and Zhai, Y. (2003, January 3–8). The associativity equation re-revisited. Proceedings of the 23rd International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering, Jackson Hole, WY, USA. AIP Conf. Proc. 707.
3. Foundations of inference;Knuth;Axioms,2012
4. Amari, S.I. (1985). Differential-Geometrical Methods in Statistics, Springer Science & Business Media.
5. Differential metrics in probability spaces;Rao;Differ. Geom. Stat. Inference,1987