TY  - BOOK
AU  - Singer, Ivan
TI  - BEST APPROXIMATION IN NORMED LINEAR SPACES BY ELEMENTS OF LINEAR SUBSPACES
U1  - 517.5 
PY  - 1970///
CY  - Berlin
PB  - Springer-Verlag
KW  - Normed Linear Spaces
KW  - Functional Analysis
KW  - Functions
ER  -