@article{05262070,
title = {Equivalent theorem on Lupa\c s operators.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {8},
year = {2007},
zbl = {1138.41007},
language = {en},
url = {http://dml.mathdoc.fr/item/05262070}
}
Deo, Naokant. Equivalent theorem on Lupaş operators.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 8 (2007) . http://gdmltest.u-ga.fr/item/05262070/