%0 Journal Article %A Carvajal, Xavier %T A note on local smoothing effects for the unitary group associated with the KdV equation %J Electronic journal of differential equations %D 2008 %V 2008 %U http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a77/ %G en %F EJDE_2008__2008__a77