@article{DAN_1992_325_5_a2,
     author = {S. A. Brykalov},
     title = {Problems with monotone nonlinear boundary conditions},
     journal = {Doklady Akademii Nauk},
     pages = {897--900},
     year = {1992},
     volume = {325},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_325_5_a2/}
}