%0 Journal Article %A G. Kresin %A V. Maz'ya %T Sharp estimates for the gradient of solutions to the heat equation %J Algebra i analiz %D 2019 %P 136-153 %V 31 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_2019_31_3_a6/ %G en %F AA_2019_31_3_a6