TY  - BOOK
AU  - Verma,S.N.
TI  - Automatic control systems;: a textbook for engineering students 
PY  - 1999///
CY  - [S.l.]
PB  - Khanna
UR  - http://www.amazon.com/exec/obidos/ASIN/B0007BZVU6/chopaconline-20
ER  -