@article{EJDE_2009__2009__a76,
     author = {Li,  Yongkun and Zhang,  Tianwei},
     title = {Existence of almost periodic solutions for {Hopfield} neural networks with continuously distributed delays and impulses},
     journal = {Electronic journal of differential equations},
     year = {2009},
     volume = {2009},
     zbl = {1186.34094},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a76/}
}