TY - JOUR AU - Cui, Jingan AU - Guo, Mingna TI - Permanence in logistic and Lotka-Volterra systems with dispersal and time delays JO - Electronic journal of differential equations PY - 2005 VL - 2005 UR - http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a263/ LA - en ID - EJDE_2005__2005__a263 ER -