TY - JOUR AU - Pan, Shuxia TI - Persistence of spreading speed for the delayed Fisher equation JO - Electronic journal of differential equations PY - 2012 VL - 2012 UR - http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a42/ LA - en ID - EJDE_2012__2012__a42 ER -