TY  - BOOK
AU  - Babu, P Ramesh & Anadanatarajan, R
TI  - Signals and systems .-4th ed .-978 81 8371 288 0
SN  - 978 81 8371 288 0
U1  - 621.38043 Bab/Ana 
PY  - 2007///
CY  - Scitech Publ., Chennai
ER  -