@article{GDZPPN002403218,
title = {Multiplication Theorems for Strong N\"orlund Summability.},
journal = {Mathematische Zeitschrift},
volume = {105},
year = {1968},
pages = {33-42},
zbl = {0162.35701},
url = {http://dml.mathdoc.fr/item/GDZPPN002403218}
}
Borwein, D.; Cass, F.P. Multiplication Theorems for Strong Nörlund Summability.. Mathematische Zeitschrift, Tome 105 (1968) pp. 33-42. http://gdmltest.u-ga.fr/item/GDZPPN002403218/