TY  - BOOK
AU  - Nagrath, I. J.
AU  - Gopal, M.
TI  - Control systems engineering
SN  - 81-224-1192-4
U1  - 629.8312 
PY  - 1989///
CY  - New Delhi
PB  - New Age
KW  - Control system
KW  - Digital control system
KW  - Frequency response
N1  - Includes bibliographical references and index; Asian
ER  -