@article{04017423,
title = {Oscillation theorems for second order nonlinear differential equations with deviating arguments.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {10},
year = {1987},
pages = {35-45},
doi = {10.1155/S0161171287000048},
zbl = {0626.34075},
language = {en},
url = {http://dml.mathdoc.fr/item/04017423}
}
Grace, S.R.; Lalli, B.S. Oscillation theorems for second order nonlinear differential equations with deviating arguments.. International Journal of Mathematics and Mathematical Sciences, Tome 10 (1987) pp. 35-45. doi : 10.1155/S0161171287000048. http://gdmltest.u-ga.fr/item/04017423/