1. A formal theory of inductive inference. Part I
2. A formal theory of inductive inference. Part II
3. A. N. Kolmogorov,The concept of "information" and foundations of probability theory, transcript of talk given at the Institute of Philosophy of the USSR Academy of Sciences on April 5, 1965, with answers to questions asked at the talk, in A Collection of Papers, D. A. Pospelov and Ya. I. Fet, eds., Voprosy Istorii Informatiki 2, IVM MG SO RAN, Novosibirsk, 2001, pp. 118-142 (in Russian),https://archive.org/details/kolmogorov-1965talk.