1. T. Adams, Over recurrence for mixing transformations, https://arxiv.org/abs/1701.04345.
2. R. Aumann, Measurable utility and the measurable choice theorem, in La Décision, 2: Agrégation et Dynamique des Ordres de Préférence (Actes Colloq. Internat., Aixen-Provence, 1967), Éditions du Centre National de la Recherche Scientifique, Paris, 1969, pp. 15–26.
3. London Mathematical Society Lecture Note Series;V Bergelson,1996
4. V. Bergelson, Weakly mixing PET, Ergodic Theory and Dynamical Systems 7 1987, 337–349.
5. V. Bergelson and I. J. Håland Knutson, Weak mixing implies weak mixing of higher orders along tempered functions, Ergodic Theory and Dynamical Systems 29 2009, 1375–1416.