@article{MZM_1980_27_3_a13,
     author = {A. A. Konyushkov},
     title = {Behavior of norms of finite differences},
     journal = {Matemati\v{c}eskie zametki},
     pages = {447--456},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1980_27_3_a13/}
}