%0 Journal Article %A Kahane, Charles S. %T A gradient estimate for solutions of the heat equation %J Czechoslovak Mathematical Journal %D 1998 %P 711-725 %V 48 %N 4 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/CMJ_1998__48_4_a8/ %G en %F CMJ_1998__48_4_a8