@article{DCG_1989__4_6_131066,
     author = {Bernd Sturmfels and Neil White and B. Jaggi and Peter Mani-Levitska},
     title = {Uniform {Oriented} {Matroids} {Without} the {Isotopy} {Property.}},
     journal = {Discrete & computational geometry},
     pages = {97--100},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1989},
     zbl = {0675.05017},
     url = {http://geodesic.mathdoc.fr/item/DCG_1989__4_6_131066/}
}