TY  - BOOK
AU  - Achim Bachem
AU  - Walter Kern
TI  - Linear programming duality : an introduction to oriented matroids 
SN  - 3540554173
U1  - 519.72 BAC(LIN) 
PY  - 1992///
PB  - Springer-Verlag : Berlin, Newyork
KW  - Oriented matroids
KW  - Linear pogramming
N1  - 3273/07-04-08
ER  -