TY  - JOUR
AU  - Liudmil Alexandrov. Vasil Popov
TI  - Onesided Trigonometrical Approximation of Periodic Multivariate Functions
JO  - Mathematica balkanica
PY  - 1988
SP  - 230
VL  - 2
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_1988_2_2_a14/
ID  - MABA_1988_2_2_a14
ER  -