TY  - BOOK
AU  - Couch, Leon W.
TI  - Modern communication systems: principles and applications 
SN  - 0131857789
PY  - 1995///
CY  - New York
PB  -  Prentice Hall
KW  - Telecommunication systems
KW  - Digital communications
N1  - Includes bibliographical references (p. 570-577) and index
ER  -