@article{EJDE_2005__2005__a263,
     author = {Cui,  Jingan and Guo,  Mingna},
     title = {Permanence in logistic and {Lotka-Volterra} systems with dispersal and time delays},
     journal = {Electronic journal of differential equations},
     year = {2005},
     volume = {2005},
     zbl = {1065.92052},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a263/}
}