@article{GDZPPN002345862,
title = {Summability Methods and Unbounded Sequences.},
journal = {Mathematica Scandinavica},
volume = {7},
year = {1959},
pages = {170-176},
zbl = {0092.05502},
url = {http://dml.mathdoc.fr/item/GDZPPN002345862}
}
Pettersen, G.M. Summability Methods and Unbounded Sequences.. Mathematica Scandinavica, Tome 7 (1959) pp. 170-176. http://gdmltest.u-ga.fr/item/GDZPPN002345862/