@article{MZM_1978_24_6_a4,
     author = {G. G. Braichev and V. V. Morzhakov},
     title = {Applicability of partial differential operators of infinite order},
     journal = {Matemati\v{c}eskie zametki},
     pages = {771--777},
     publisher = {mathdoc},
     volume = {24},
     number = {6},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1978_24_6_a4/}
}