TY - JOUR AU - Zhang, Fuxing AU - Li, Ya TI - Almost periodic solutions for higher-order Hopfield neural networks without bounded activation functions JO - Electronic Journal of Differential Equations PY - 2007 VL - 2007 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a299/ LA - en ID - EJDE_2007__2007__a299 ER -