@article{GDZPPN002405393,
title = {Two Problems in Summability.},
journal = {Mathematische Zeitschrift},
volume = {111},
year = {1969},
pages = {221-221},
zbl = {0175.34701},
url = {http://dml.mathdoc.fr/item/GDZPPN002405393}
}
Wilansky, Albert; Bennett, Graham. Two Problems in Summability.. Mathematische Zeitschrift, Tome 111 (1969) p. 221. http://gdmltest.u-ga.fr/item/GDZPPN002405393/