@article{GDZPPN002405571,
title = {Factor Sequences for Summability Matrices.},
journal = {Mathematische Zeitschrift},
volume = {111},
year = {1969},
pages = {389-392},
zbl = {0192.41702},
url = {http://dml.mathdoc.fr/item/GDZPPN002405571}
}
Petersen, Gordon M. Factor Sequences for Summability Matrices.. Mathematische Zeitschrift, Tome 111 (1969) pp. 389-392. http://gdmltest.u-ga.fr/item/GDZPPN002405571/