@article{DAN_1962_145_4_a5,
     author = {E. V. Zolotareva},
     title = {A necessary and sufficient condition that the {Dirichlet} problem for a class of elliptic systems be of {Fredholm} character},
     journal = {Doklady Akademii Nauk},
     pages = {724--726},
     publisher = {mathdoc},
     volume = {145},
     number = {4},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_145_4_a5/}
}