1. R. P. Boas, Jr., and S. Bochner, On a theorem of M. Riesz for Fourier series, J. London Math. Soc. vol. 14 (1939) pp. 62-73.
2. J. Marcinkiewicz, Sur les multiplicateurs des séries de Fourier, Studia Mathematica vol. 8 (1939) pp. 78-91.
3. \bysame, Sur la sommabilité 𝐻_{𝑘} de séries de Fourier, C. R. Acad. Sci. Paris vol. 208 (1939) pp. 782-784.
4. On the strong summability of Fourier series;Sunouchi, Gen-ichirô;Proc. Imp. Acad. Tokyo,1943
5. \bysame, On Walsh-Kaczmarz series, to be published in the Proceedings of the American Mathematical Society.