1. P. Halmos,Measure Theory. 1950 (Van Nostrand).
2. K. Jacobs, Lectures on ergodic Theory, Vol. II. 1962, p. 241–267. (Seminaires de l'Université d'Aarhus).
3. J. Neveu,Bases Mathématiques du Calcul des Probabilités (Masson, 1964).
4. V. A. Rohlin, New progress in the theory of transformations with invariant measure,Uspehi Mat. Nauk,15 (1960), p. 1–26; English translation inRussian Math. Surveys,15 (1960), p. 1–22.