1. N. K. Bary,Trigonometričeskie Rjadi, Gosudarstvennoe Izdateljstvo (Moscow, 1961).
2. J. Dobi, A remark on the norm of the Banach space of uniformly strong convergent trigonometric series.Acta Math. Hung.,51 (1988), 201–203.
3. R. E. Edwards,Fourier Series, Modern Introduction, Vols. 1 & 2, Holt, Rinehart and Winston, Inc. (New York, 1967).
4. C. P. Kahane,Séries de Fourier Absolument Convergentes, Springer-Verlag (Berlin, Heidelberg, New York, 1970).
5. I. Szalay, Ob absolutnoi summiruemosti trigonometričeskih rjadov,Mat. Zametki,30 (1981), 823–837 (in Russian).