TY  - BOOK
AU  - Ravindran, A.
AU  - Ravindran, A.
AU  - Philips, Don T.
AU  - Solberg, James J.
TI  - Operations Research, principles and practice.-2nd ed
PY  - 2000///
CY  - NewYork
PB  - John Wiley 
KW  - Operations Research
ER  -