TY  - BOOK
AU  - Butzer,P.L & Nessel,R.J
ED  - Nessel, R.J
TI  - Fourier analysis & approximation, Vol.1: one dimensional theory
T2  - Pure & applied mathematics 40-I
U1  - 4.12 
PY  - 1971///
CY  - Basel
PB  - Birkhauser Verlag
ER  -