@article{TRSPY_1999_227_a1,
     author = {K. O. Besov},
     title = {On the {Nikol'skii} {Classes} of {Polyharmonic} {Functions}},
     journal = {Informatics and Automation},
     pages = {43--55},
     publisher = {mathdoc},
     volume = {227},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1999_227_a1/}
}