@article{10_4153_CMB_1998_030_3,
     author = {Philos, CH. G. and Sficas, Y. G.},
     title = {An {Oscillation} {Criterion} for {First} {Order} {Linear} {Delay} {Differential} {Equations}},
     journal = {Canadian mathematical bulletin},
     pages = {207--213},
     year = {1998},
     volume = {41},
     number = {2},
     doi = {10.4153/CMB-1998-030-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1998-030-3/}
}