%0 Journal Article %A Greco, Antonio %A Kawohl, Bernd %T Log-concavity in some parabolic problems %J Electronic Journal of Differential Equations %D 1999 %V 1999 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_1999__1999__a65/ %G en %F EJDE_1999__1999__a65