@article{MZM_1980_27_2_a6,
     author = {M. B. Gorodetskii},
     title = {Discrete convolutions in a plane quadrant with an infinitely differentiable symbol},
     journal = {Matemati\v{c}eskie zametki},
     pages = {217--224},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1980_27_2_a6/}
}