@article{DAN_1995_345_2_a7,
     author = {B. Ya. Roitberg and Ya. A. Roitberg},
     title = {Local increase of the smoothness of generalized solutions of},
     journal = {Doklady Akademii Nauk},
     pages = {175--178},
     publisher = {mathdoc},
     volume = {345},
     number = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_345_2_a7/}
}