TY  - JOUR
AU  - T. F. Xie
AU  - S. P. Zhou
TI  - A Problem on Approximation by Euler Means
JO  - Mathematica balkanica
PY  - 1992
SP  - 33
VL  - 6
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_1992_6_1_a3/
ID  - MABA_1992_6_1_a3
ER  -