TY  - BOOK
AU  - Ljung Lennart
TI  - System identification :  Theory for the user   
T2  - Prentice Hall information and system science
U1  - X:8:(B2893), M7 
PY  - 1987///
CY  - New Jersey 
PB  - Prentice Hall        
KW  - Organizational Management
ER  -