TY  - BOOK
AU  - Gabel,, Robert A.
AU  - Roberts,, Richard A.
TI  - Signals and linear systems / 
U1  - 621.382 2 
PY  - 2009///
CY  - New York
PB  - John wiley and sons
KW  - Signals
KW  - Systems
KW  - Engineering
ER  -