@article{DAN_1978_243_3_a1,
     author = {Yu. Ya. Belov},
     title = {On a system of nonlinear operator equations in a {Banach} space},
     journal = {Doklady Akademii Nauk},
     pages = {557--560},
     year = {1978},
     volume = {243},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_243_3_a1/}
}