@article{DCG_1993__10_2_131275,
     author = {G.M. Ziegler and N.E. Mn\"ev},
     title = {Oriented {Matroids} with {Few} {Mutations.}},
     journal = {Discrete & computational geometry},
     pages = {251--270},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DCG_1993__10_2_131275/}
}