%0 Journal Article %A E. M. Landis %T Necessary and sufficient conditions for the regularity of a boundary point for the Dirichlet problem for the heat equation %J Doklady Akademii Nauk %D 1969 %P 517-520 %V 185 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_185_3_a6/ %G ru %F DAN_1969_185_3_a6