@article{GDZPPN002030365,
title = {Convergence of an operator series.},
journal = {Aequationes mathematicae},
volume = {15},
year = {1977},
pages = {31-36},
zbl = {0376.47011},
url = {http://dml.mathdoc.fr/item/GDZPPN002030365}
}
Koliha, J.J. Convergence of an operator series.. Aequationes mathematicae, Tome 15 (1977) pp. 31-36. http://gdmltest.u-ga.fr/item/GDZPPN002030365/