%0 Journal Article %A Li, Yongkun %T Existence and exponential stability of periodic solution for continuous-time and discrete-time generalized bidirectional neural networks %J Electronic Journal of Differential Equations %D 2006 %V 2006 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a168/ %G en %F EJDE_2006__2006__a168