[2] G. Das:
Tauberian Theorems for Absolute Nörlund Summability. Proc. London Math. Soc. 19 (1969), 357–384.
MR 0240503 |
Zbl 0183.32603
[6] G. Sunouchi:
Notes on Fourier Analysis XVIII, Absolute Summability of a Series with Constant Terms. Tohoku Math. Journal 2 (1949), 57–65.
DOI 10.2748/tmj/1178245769