@article{IVM_1973_7_a2,
     author = {G. V. Gusel'nikova and V. Ya. Derr},
     title = {A~sufficient criterion for the non-oscillatoriness of a~certain difference equation},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {25--31},
     publisher = {mathdoc},
     number = {7},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1973_7_a2/}
}