@article{DAN_1969_185_3_a6,
     author = {E. M. Landis},
     title = {Necessary and sufficient conditions for the regularity of a boundary point for the {Dirichlet} problem for the heat equation},
     journal = {Doklady Akademii Nauk},
     pages = {517--520},
     publisher = {mathdoc},
     volume = {185},
     number = {3},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_185_3_a6/}
}