@article{10_4064_ap111_2_7,
     author = {Lequn Peng and Lijuan Wang},
     title = {Periodic solutions for first order
 neutral functional differential equations
 with multiple deviating arguments},
     journal = {Annales Polonici Mathematici},
     pages = {197--213},
     publisher = {mathdoc},
     volume = {111},
     number = {2},
     year = {2014},
     doi = {10.4064/ap111-2-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap111-2-7/}
}