TY  - BOOK
AU  - A. Bruce Carlson 
AU  - Paul B. Crilly 
AU  - Janet C. Rutledge 
TI  - Communication Systems: An Introduction to Signals and Noise in Electrical Communication
SN  - 0-07-121028-8
U1  - 621.38223 C284c 2002 4th Ed. 
PY  - 2002///
CY  - New York: 
PB  - The McGraw-Hill Companies, Inc.
ER  -