@article{SMJ2_2008_34_3_a0,
     author = {Elabbasy, E. M. and Hassan, T. S.},
     title = {Oscillation of {Nonlinear} {Neutral} {Delay} {Differential} {Equations}},
     journal = {Serdica Mathematical Journal},
     pages = {531--542},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2008_34_3_a0/}
}