@article{1195525768,
author = {Izumi, Shin-ichi and Kinukawa, Masakiti},
title = {On the strong summability of the derived Fourier series, II},
journal = {Proc. Japan Acad.},
volume = {31},
number = {9},
year = {1955},
pages = { 107-110},
language = {en},
url = {http://dml.mathdoc.fr/item/1195525768}
}
Izumi, Shin-ichi; Kinukawa, Masakiti. On the strong summability of the derived Fourier series, II. Proc. Japan Acad., Tome 31 (1955) no. 9, pp. 107-110. http://gdmltest.u-ga.fr/item/1195525768/