[1] J. BALATONI A. RÉNYI: On the notion of entropy (Hungarian). Publ. Math. Inst. Hungarian Acad. Sci. 1 (1956), 9-40. - English translation: Selected papers of Alfred Renyi, vol. I, pp. 558-584, Akademiai Kiado, Budapest, 1976.
[2] M. KATĚTOV:
Extended Shannon entropies I. Czechosl. Math. J. 33 (108) (1983), 564-601.
MR 0721088
[3] M. KATĚTOV:
On extended Shannon entropies and the epsilon entropy. Comment. Math. Univ. Carolinae 27 (1986), 519-543.
MR 0873625
[4] M. KATĚTOV:
On the Rényi dimension. Comment. Math. Univ. Carolinae 27 (1986), 741-753.
MR 0874669