@article{01517270,
title = {On the oscillation of certain second-order differential equations.},
journal = {Georgian Mathematical Journal},
volume = {7},
year = {2000},
pages = {201-213},
zbl = {0958.34027},
language = {en},
url = {http://dml.mathdoc.fr/item/01517270}
}
Agarwal, Ravi P.; Grace, S.R. On the oscillation of certain second-order differential equations.. Georgian Mathematical Journal, Tome 7 (2000) pp. 201-213. http://gdmltest.u-ga.fr/item/01517270/