%0 Journal Article %A Vera Villagran, Octavio Paulo %T Gain of regularity for a Korteweg-de Vries--Kawahara type equation %J Electronic Journal of Differential Equations %D 2004 %V 2004 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a96/ %G en %F EJDE_2004__2004__a96