TY  - BOOK
AU  - Bell,D.J & Jacobson,D.H
ED  - Jacobson, D.H
TI  - Singular optimal control problems
T2  - Mathematics in science & engineering 117
SN  - 0120850605
U1  - 15.04 
PY  - 1975///
CY  - London
PB  - Academic Press
ER  -