TY  - JOUR
AU  - S. A. Agahanov
AU  - N. Sh. Zagirov
TI  - Approximation of the function sign x in the uniform and integral metrics by means of rational functions
JO  - Matematičeskie zametki
PY  - 1978
SP  - 825
EP  - 838
VL  - 23
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1978_23_6_a4/
LA  - ru
ID  - MZM_1978_23_6_a4
ER  -