1. Making sense of the Legendre transform
2. Quantification method of classification processes. Concept of structural α-entropy;Havrda;Kybernetika,1967
3. Axioms for α-entropy of a generalized probability scheme;Vajda;Kybernetika,1968
4. Generalized information functions
5. Studies in statistical mechanics;Lindhard;Det Kongelige Danske Videnskabernes Selskab Matematisk Fysiske Meddelelser,1971