TY  - JOUR
AU  - E. A. Rovba
TI  - An approximation of $|\sin x|$ by rational Fourier series
JO  - Matematičeskie zametki
PY  - 1989
SP  - 52
EP  - 59
VL  - 46
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1989_46_4_a7/
LA  - ru
ID  - MZM_1989_46_4_a7
ER  -