TY  - JOUR
AU  - George A Anastassiou
TI  - Advanced ordinary and fractional approximation by positive sublinear operators
JO  - Filomat
PY  - 2021
SP  - 1899 
VL  - 35
IS  - 6
UR  - http://geodesic.mathdoc.fr/articles/10.2298/FIL2106899A/
DO  - 10.2298/FIL2106899A
LA  - en
ID  - 10_2298_FIL2106899A
ER  -