1. W. Rudin, Fourier Analysis on Groups (Interscience, New York, 1962).
2. M. Loève, Probability Theory (D. van Nostrand, Princeton, NJ, 1960; Inostrannaya Literatura, Moscow, 1962).
3. N. K. Bari, Trigonometric Series (Fizmatgiz, Moscow, 1961); Engl. transl.: A Treatise on Trigonometric Series (Pergamon, Oxford, 1964), Vols. I, II.
4. E. Lukacs, Characteristic Functions (Charles Griffin and Co., London, 1970; Nauka, Moscow, 1979).
5. R. P. Boas, Jr. and M. Kac, “Inequalities for Fourier Transforms of Positive Functions,” Duke Math. J. 12(1), 189–206 (1945).