TY  - BOOK
AU  - Bensoussan Alain
TI  - Perturbation methods in optimal control
T2  - Wiley/ Gauthier-villars series in modern applied mathematics
U1  - B28931, M8 
PY  - 1988///
CY  - Chichester
PB  - John Wiley        
KW  - Ooptimal control theory
ER  -