1. A. N. Kolmogoroff, “Une série de Fourier-Lebesgue divergente presque partout,” Fund. Math. 4, 324–328 (1923).
2. A. N. Kolmogoroff, “Une série de Fourier-Lebesgue divergente partout,” C. R. Acad. Sci. Paris 183, 1327–1329 (1926).
3. S. V. Bochkarev, “A Fourier Series in an Arbitrary Bounded Orthonormal System That Diverges on a Set of Positive Measure,” Mat. Sb. 98(3), 436–449 (1975) [Math. USSR, Sb. 27 (3), 393–405 (1975)].
4. Tr. Mat. Inst. im. V.A. Steklova, Akad. Nauk SSSR;S. V. Bochkarev,1978
5. S. V. Bochkarev, “Averaging Method in the Theory of Orthogonal Series,” in Proceedings of the International Congress of Mathematicians, Helsinki, Finland, 1978 (Acad. Sci. Fenn., Helsinki, 1980), Vol. 2, pp. 599–604.