TY  - JOUR
AU  - V. A. Kofanov
TI  - Approximation in the mean of classes of differentiable functions by algebraic polynomials
JO  - Izvestiya. Mathematics 
PY  - 1984
SP  - 353
EP  - 365
VL  - 23
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1984_23_2_a5/
LA  - en
ID  - IM2_1984_23_2_a5
ER  -