@article{01960269,
title = {On the oscillatory nature of perturbed second order nonlinear differential equations with damping.},
journal = {Mathematica Pannonica},
volume = {13},
year = {2002},
pages = {117-127},
zbl = {1017.34031},
language = {en},
url = {http://dml.mathdoc.fr/item/01960269}
}
Nápoles, Juan E. On the oscillatory nature of perturbed second order nonlinear differential equations with damping.. Mathematica Pannonica, Tome 13 (2002) pp. 117-127. http://gdmltest.u-ga.fr/item/01960269/