@article{DE_1984_20_4_a9,
     author = {G. V. Zhidkov},
     title = {Construction of function spaces by means of the {Laplace} operator and the averaging method},
     journal = {Differencialʹnye uravneni\^a},
     pages = {632--641},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_4_a9/}
}