TY  - BOOK
AU  - Bachem Achim
AU  - Kern Walter
TI  - Linear programming duality: an introduction to oriented matroids
U1  - 519.72 
PY  - 1992///
CY  - Berlin
PB  - Springer Verlag
KW  - Linear programming
KW  - Programming
KW  - Programming deality
ER  -