TY  - BOOK
AU  - Couch,Leon.W
TI  - Digital and Analog Communication Systems
SN  - 81-203-3411-3
U1  - 621.3815 
PY  - 2007///
CY  - India
PB  - Prentice Hall
KW  - Engineering
KW  - List of symbols,Signals and Spectra
ER  -