TY  - DATA
AU  - Ronald A. De Vore
TI  - The Approximation of Continuous Functions by Positive Linear Operators
T2  - Lecture Notes in Mathematics
SN  - 9783540379959
PY  - 1972///
CY  - Heidelberg
PB  - Springer Berlin
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/BFb0059493
ER  -