@article{10_21136_MB_2017_0050_16,
     author = {Li, Yongxiang and Liu, Ailan},
     title = {Positive periodic solutions of a neutral functional differential equation with multiple delays},
     journal = {Mathematica Bohemica},
     pages = {11--24},
     publisher = {mathdoc},
     volume = {143},
     number = {1},
     year = {2018},
     doi = {10.21136/MB.2017.0050-16},
     mrnumber = {3778047},
     zbl = {06861589},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2017.0050-16/}
}