@article{01446321,
title = {On Hadamard's inequality on a disk.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {1},
year = {2000},
zbl = {0948.26012},
language = {en},
url = {http://dml.mathdoc.fr/item/01446321}
}
Dragomir, S.S. On Hadamard's inequality on a disk.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 1 (2000) . http://gdmltest.u-ga.fr/item/01446321/