TY  - JOUR
AU  - A. M. Sedletskii
TI  - Approximation properties of exponential  systems on the real line and the half-line
JO  - Sbornik. Mathematics
PY  - 1998
SP  - 443
EP  - 460
VL  - 189
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1998_189_3_a5/
LA  - en
ID  - SM_1998_189_3_a5
ER  -