TY  - BOOK
AU  - Hardle Wolfgang
TI  - Smoothing techniques: with implemetation in S
T2  - Springer Series in Statistics; 1
U1  - B282, N1 
PY  - 1991///
CY  - New York    
PB  -  Springer-Verlag        
KW  -  Mathematical statistics -Data processing
KW  - Smoothing
ER  -