@article{DAN_1964_159_5_a13,
     author = {N. E. Tovmasyan},
     title = {The {Dirichlet} problem for an elliptic system of second-order differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {995--998},
     publisher = {mathdoc},
     volume = {159},
     number = {5},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_159_5_a13/}
}