@article{EJDE_2004__2004__a84,
     author = {Nguyen,  Thanh Lan},
     title = {Periodicity of mild solutions to higher order differential equations in {Banach} spaces},
     journal = {Electronic journal of differential equations},
     year = {2004},
     volume = {2004},
     zbl = {1060.34026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a84/}
}