@article{DAN_1985_284_6_a2,
     author = {S. A. Brykalov},
     title = {Some conditions for the existence of solutions of nonlinear},
     journal = {Doklady Akademii Nauk},
     pages = {1297--1301},
     publisher = {mathdoc},
     volume = {284},
     number = {6},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_284_6_a2/}
}