@article{MZM_1983_34_2_a6,
     author = {A. B\"ottcher},
     title = {Two-dimensional convolutions in angular sectors with kernels having their supports in a half plane},
     journal = {Matemati\v{c}eskie zametki},
     pages = {207--218},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1983_34_2_a6/}
}