@article{10_4153_CMB_1986_069_2,
     author = {Ladas, G. and Sficas, Y. G.},
     title = {Oscillations of {Neutral} {Delay} {Differential} {Equations}},
     journal = {Canadian mathematical bulletin},
     pages = {438--445},
     year = {1986},
     volume = {29},
     number = {4},
     doi = {10.4153/CMB-1986-069-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-069-2/}
}