Relativity and irreversibility. Antoniou, I., Karpov, E., Prigogine, I., Pronko, G. (2004) Discrete Dynamics in Nature and Society
Remark on two papers concerning axiomatics of quantum mechanics Václav Alda (1980) Aplikace matematiky By modifying a scheme (due to Gunson) it can be shown that the space generated by all irreducible states has a prehilbertian structure.