@article{DE_1984_20_9_a14,
     author = {V. G. Dolgolaptev},
     title = {Absolute summability by {Riesz} means, formed with respect to a fundamental function system of the {Laplace} operator, of functions from a {Nikol'ski{\v\i}} class},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1577--1582},
     publisher = {mathdoc},
     volume = {20},
     number = {9},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_9_a14/}
}