TY  - JOUR
AU  - Vijay Gupta
AU  - Gancho Tachev
TI  - Some Results on Post-Widder Operators Preserving Test Function $x^r$
JO  - Kragujevac Journal of Mathematics
PY  - 2022
SP  - 149 
VL  - 46
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/KJM_2022_46_1_a11/
LA  - en
ID  - KJM_2022_46_1_a11
ER  -