References
- N. K. Bary, A treatise on trigonometric series, Vol II, Pergamon Press, London, (1964).
- G. A. Fomin, On Linear methods for summing Fourier series, Mat. Sb., 66(107)(1964), 114-152.
- B. Ram, Convergence of certain cosine sums in the metric space L, Proc. Amer. Math. Soc., 66(2)(1977), 258-260.
- C. S. Rees and C. V. Stanojevic, Necessary and sufficient condition for integrability of certain cosine sums, J. Math. Anal. App., 43(1973), 579-586. https://doi.org/10.1016/0022-247X(73)90278-3
- S. Sheng, The extension of the theorems of C.V. Stanojevic and V.B. Stanojevic, Proc. Amer. Math. Soc., 110(1990), 895-904.
- S. Sidon, Hinreichende Bedingungen fur den Fourier-Charakter einer trigonometrischen Reihe, J. London Math Soc., 14(1939), 158-160. https://doi.org/10.1112/jlms/s1-14.2.158
- Z. Tomovski, An extension of the Sidon-Fomin inequality and applications, Math. Ineq. and Appl., 4(2)(2001), 231-238.
- A. Zygmund, Trigonometric series, Cambridge Univ., (1959).