@article{02218572,
title = {Some Boas-Bellman type inequalities in 2-inner product spaces.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {6},
year = {2005},
zbl = {1080.26018},
language = {en},
url = {http://dml.mathdoc.fr/item/02218572}
}
Dragomir, S.S.; Cho, Y.J.; Kim, S.S.; Sofo, A. Some Boas-Bellman type inequalities in 2-inner product spaces.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 6 (2005) . http://gdmltest.u-ga.fr/item/02218572/