%0 Journal Article %A Ghouali, Noureddine %A Touaoula, Tarik Mohamed %T Nonautonomous ultraparabolic equations applied to population dynamics %J Electronic Journal of Differential Equations %D 2005 %V 2005 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a214/ %G en %F EJDE_2005__2005__a214