@article{GDZPPN001164333,
title = {The Norm of the Schur Product Operation.},
journal = {Numerische Mathematik},
volume = {4},
year = {1962},
pages = {343-344},
zbl = {0111.01504},
url = {http://dml.mathdoc.fr/item/GDZPPN001164333}
}
DAVIS, CH. The Norm of the Schur Product Operation.. Numerische Mathematik, Tome 4 (1962) pp. 343-344. http://gdmltest.u-ga.fr/item/GDZPPN001164333/