TY  - BOOK
AU  - Alencar Marcelo S
AU  -  Da Rocha Valdemar C
TI  - Communication systems
SN  - 0387254811
U1  - Y:393:(D6,9(B), P5 
PY  - 2005///
CY  - New York
PB  - Springer Science        
N1  - Bibliography: P 399-400
ER  -