@article{DAN_1989_307_1_a0,
     author = {S. A. Brykalov},
     title = {Nonlinear boundary value problems and the existence of stationary},
     journal = {Doklady Akademii Nauk},
     pages = {11--14},
     publisher = {mathdoc},
     volume = {307},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_307_1_a0/}
}