%0 Journal Article %A B. Sturmfels %A J. Bokowski %A J. Richter %T Nonrealizability Proofs in Computational Geometry. %J Discrete & computational geometry %D 1990 %P 333-350 %V 5 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DCG_1990__5_2_131121/ %F DCG_1990__5_2_131121