@article{DAN_1986_286_1_a9,
     author = {V. K. Romanko},
     title = {Mixed boundary value problems for a system of equations},
     journal = {Doklady Akademii Nauk},
     pages = {47--50},
     publisher = {mathdoc},
     volume = {286},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_286_1_a9/}
}