TY  - BOOK
AU  - Cornuejols, Gerard
AU  - 
TI  - Combinatorial optimization: packing and covering
T2  - CBMS-NSF regional conference series in Applied Mathematics 
SN  - 0898714818
U1  - 511.6 
PY  - 2001///
CY  - Philadelphia
PB  - SIAM
ER  -