@article{02107655,
title = {Some companions of the Gr\"uss inequality in inner product spaces.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {4},
year = {2003},
zbl = {1063.26013},
language = {en},
url = {http://dml.mathdoc.fr/item/02107655}
}
Dragomir, S.S. Some companions of the Grüss inequality in inner product spaces.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 4 (2003) . http://gdmltest.u-ga.fr/item/02107655/