TY  - DATA
AU  - Cha Philip D
TI  - Fundamentals of Signals and Systems
U1  - 621.3822 CHA 
PY  - 2007///
CY  - New York
PB  - Cambrage University Press
KW  -  Cha Philip D
KW  -  Signals
KW  -  Systems
KW  - Fundamentals
ER  -