TY  - JOUR
AU  - M. I. Ganzburg
TI  - Exact errors of best approximation for complex-valued periodic functions
JO  - Sbornik. Mathematics
PY  - 2018
SP  - 421
EP  - 431
VL  - 209
IS  - 3
UR  - http://geodesic.mathdoc.fr/item/SM_2018_209_3_a5/
LA  - en
ID  - SM_2018_209_3_a5
ER  -