@article{DAN_1967_175_5_a3,
     author = {A. Dzhuraev},
     title = {An elliptic system of second-order equations on the plane},
     journal = {Doklady Akademii Nauk},
     pages = {985--988},
     year = {1967},
     volume = {175},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_175_5_a3/}
}