TY  - BOOK
AU  - Nemhauser, George L.
AU  - Wolsey, Laurence A.
TI  - Integer and combinatorial optimization
T2  - Wiley-interscience series in Discrete Mathematics and optimization
U1  - 519.91 
PY  - 1988///
CY  - New York
PB  - John Wiley
ER  -