Ivo G. Rosenberg Dan A. Simovici An Abstract Axiomatization of the Notion of Entropy. 8-13 2005 conf/ismvl/2005 ISMVL http://doi.ieeecomputersociety.org/10.1109/ISMVL.2005.7 db/conf/ismvl/ismvl2005.html#RosenbergS05