TY  - BOOK
AU  - Bachem Achim
AU  -  Kern Walter
TI  - Linear programming duality: an introduction to oriented matroids
T2  - Universitext
SN  - 3540554173 (Berlin:pbk)
U1  - B2T1, N2 
PY  - 1992///
CY  - Berlin
PB  - Springer-Verlag         
KW  -  Linear programming
KW  - Operations research
N1  - Bibliography 197-210p; Index 213-216p
ER  -