TY  - BOOK
AU  - El-Hawary, M. E.
AU  - Christensen, G. S.
TI  - Optimal economic operation of electric power systems
T2  - Mathematics in science and engineering
SN  - 0122368509
U1  - 621.3191 
PY  - 1979///
CY  - New York
PB  - Academic Press
ER  -