@article{DAN_1996_348_2_a0,
     author = {A. A. Andryan},
     title = {On the solvability of a system of partial differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {151--154},
     publisher = {mathdoc},
     volume = {348},
     number = {2},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_348_2_a0/}
}