TY  - JOUR
AU  - I. I. Sharapudinov
TI  - Approximation properties of mixed series in terms of Legendre polynomials on the classes~$W^r$
JO  - Sbornik. Mathematics
PY  - 2006
SP  - 433
EP  - 452
VL  - 197
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2006_197_3_a6/
LA  - en
ID  - SM_2006_197_3_a6
ER  -