@article{IVM_1976_4_a2,
     author = {G. V. Gusel'nikova and V. Ya. Derr},
     title = {An inequality for a~certain nonlinear difference boundary value problem},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {27--37},
     publisher = {mathdoc},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1976_4_a2/}
}