@article{DAN_1971_196_4_a1,
     author = {V. A. Danilov},
     title = {On the smoothness of quasi-conformal mappings in closed domains},
     journal = {Doklady Akademii Nauk},
     pages = {746--747},
     publisher = {mathdoc},
     volume = {196},
     number = {4},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_196_4_a1/}
}