TY  - BOOK
AU  - Oppenheim, Alan, V Schafer, Ronald, W and Buck, John, R 
TI  - Discrete time signal processing 
SN  - 81-317-0492-0 
U1  - 621.382 2 OPP  
PY  - 2007///
CY  - Pearson education of asia 
PB  - New Delhi 
KW  - SIGNAL PROCESSING
ER  -