TY  - JOUR
AU  - Ditzian, Z.
TI  - On Global Inverse Theorems of Szász and Baskakov Operators
JO  - Canadian journal of mathematics
PY  - 1979
SP  - 255
EP  - 263
VL  - 31
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1979-027-2/
DO  - 10.4153/CJM-1979-027-2
ID  - 10_4153_CJM_1979_027_2
ER  -