TY  - BOOK
AU  - Steckin S B
ED  - Steklov Institute of Mathematics( 1967 : Moscow )
ED  - Steklov Institute of Mathematics
TI  - Approximation of functions in the mean : proceedings
U1  - 510.6047 
PY  - 1969///
CY  - Providence
PB  - A M S
KW  - Mathematics
ER  -