TY  - JOUR
AU  - Jürgen Richter-Gebert
TI  - Two interesting oriented matroids
JO  - Documenta mathematica
PY  - 1996
SP  - 137
EP  - 148
VL  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4171/dm/7/
DO  - 10.4171/dm/7
ID  - 10_4171_dm_7
ER  -