@article{GDZPPN002344394,
title = {On an absolute constant pertaining to Cauchy's "principal moduli" in bounded power series},
journal = {Mathematica Scandinavica},
volume = {4},
year = {1956},
pages = {108-112},
zbl = {0070.29503},
url = {http://dml.mathdoc.fr/item/GDZPPN002344394}
}
WINTNER, AUREL. On an absolute constant pertaining to Cauchy's "principal moduli" in bounded power series. Mathematica Scandinavica, Tome 4 (1956) pp. 108-112. http://gdmltest.u-ga.fr/item/GDZPPN002344394/