TY  - JOUR
AU  - M. M. Dzhrbashyan
TI  - Biorthogonal systems of rational functions and best approximation of the Cauchy kernel on the real axis
JO  - Sbornik. Mathematics
PY  - 1974
SP  - 409
EP  - 433
VL  - 24
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1974_24_3_a4/
LA  - en
ID  - SM_1974_24_3_a4
ER  -