TY  - BOOK
AU  - Haykin, Simon and Veen, Barry Van 
TI  - Signals and systems 
SN  - 978-81-265-1265-2 
U1  - 621.382 2 HAY  
PY  - 2004///
CY  - John wiley and sons 
PB  - New York 
KW  - SIGNAL PROCESSING
ER  -