@article{10_4153_CJM_1988_057_0,
     author = {Ladas, G. and Partheniadis, E. C. and Sficas, Y. G.},
     title = {Oscillations of {Second} {Order} {Neutral} {Equations}},
     journal = {Canadian journal of mathematics},
     pages = {1301--1314},
     year = {1988},
     volume = {40},
     number = {6},
     doi = {10.4153/CJM-1988-057-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1988-057-0/}
}