@article{05601971,
title = {Operator norms of words formed from positive-definite matrices.},
journal = {ELA. The Electronic Journal of Linear Algebra [electronic only]},
volume = {18},
year = {2009},
pages = {13-20},
zbl = {1175.15022},
language = {en},
url = {http://dml.mathdoc.fr/item/05601971}
}
Drury, Stephen W. Operator norms of words formed from positive-definite matrices.. ELA. The Electronic Journal of Linear Algebra [electronic only], Tome 18 (2009) pp. 13-20. http://gdmltest.u-ga.fr/item/05601971/