@article{1195579745,
author = {Izumi, Shin-ichi and Kawata, Tatsuo},
title = {Notes on Fourier series, III. Absolute summability},
journal = {Proc. Imp. Acad.},
volume = {14},
number = {10},
year = {1938},
pages = { 32-35},
language = {en},
url = {http://dml.mathdoc.fr/item/1195579745}
}
Izumi, Shin-ichi; Kawata, Tatsuo. Notes on Fourier series, III. Absolute summability. Proc. Imp. Acad., Tome 14 (1938) no. 10, pp. 32-35. http://gdmltest.u-ga.fr/item/1195579745/