@article{DAN_1958_121_3_a0,
     author = {V. S. Vinogradov},
     title = {On the boundedness of the solutions of boundary problems for first order linear elliptical systems in a plane},
     journal = {Doklady Akademii Nauk},
     pages = {399--402},
     publisher = {mathdoc},
     volume = {121},
     number = {3},
     year = {1958},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_121_3_a0/}
}