@article{10_4153_CMB_1979_053_4,
     author = {Sficas, Y. G.},
     title = {Strongly {Monotone} {Solutions} of {Retarded} {Differential} {Equations}},
     journal = {Canadian mathematical bulletin},
     pages = {403--412},
     year = {1979},
     volume = {22},
     number = {4},
     doi = {10.4153/CMB-1979-053-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1979-053-4/}
}