@article{SM_1998_189_7_a3,
     author = {A. K. Gushchin},
     title = {Some properties of the~solutions of {the~Dirichlet}  problem for a~second-order elliptic equation},
     journal = {Sbornik. Mathematics},
     pages = {1009--1045},
     publisher = {mathdoc},
     volume = {189},
     number = {7},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1998_189_7_a3/}
}