@article{DAN_1988_299_6_a6,
     author = {N. V. Miroshin},
     title = {Smoothness of the solutions of boundary value problems and},
     journal = {Doklady Akademii Nauk},
     pages = {1310--1312},
     publisher = {mathdoc},
     volume = {299},
     number = {6},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_299_6_a6/}
}