@article{GDZPPN00219449X,
title = {A strong-Riesz mean-value theorem with applications to summability factor theorems.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {302},
year = {1978},
pages = {16-31},
zbl = {0365.40005},
url = {http://dml.mathdoc.fr/item/GDZPPN00219449X}
}
Kratz, W.; Shawyer, B.L.R. A strong-Riesz mean-value theorem with applications to summability factor theorems.. Journal für die reine und angewandte Mathematik, Tome 302 (1978) pp. 16-31. http://gdmltest.u-ga.fr/item/GDZPPN00219449X/