%0 Journal Article %A G.M. Ziegler %A N.E. Mnëv %T Oriented Matroids with Few Mutations. %J Discrete & computational geometry %D 1993 %P 251-270 %V 10 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DCG_1993__10_2_131275/ %G en %F DCG_1993__10_2_131275