@article{DAN_1979_249_2_a0,
     author = {S. P. Baiborodov},
     title = {On the approximation of functions of several variables by de la {Vallee} {Poussin} rectangular sums},
     journal = {Doklady Akademii Nauk},
     pages = {265--267},
     publisher = {mathdoc},
     volume = {249},
     number = {2},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_249_2_a0/}
}