TY  - JOUR
AU  - Ю. L. Bessonov
TI  - Approximation of periodic functions of class $W_{p,\theta}^{(r_1,r_2)}$ by Fourier sums
JO  - Doklady Akademii Nauk
PY  - 1962
SP  - 519
EP  - 522
VL  - 147
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1962_147_3_a0/
LA  - ru
ID  - DAN_1962_147_3_a0
ER  -