@article{GDZPPN002534088,
title = {On an inequality of N. Levinson.},
journal = {Publications de l'Institut Math\'ematique [Elektronische Ressource]},
volume = {24},
year = {1970},
pages = {155-158},
zbl = {0204.08201},
url = {http://dml.mathdoc.fr/item/GDZPPN002534088}
}
Vasic, P.M.; Janic, R.R. On an inequality of N. Levinson.. Publications de l'Institut Mathématique [Elektronische Ressource], Tome 24 (1970) pp. 155-158. http://gdmltest.u-ga.fr/item/GDZPPN002534088/