1. L. J. Billera and B. S. Munson, “Polarity and Inner Products in Oriented Matroids,” Europ. J. Combinatorics, to appear.
2. L. J. Billera and B. S. Munson, “Triangulations of Oriented Matroids and Convex Polytopes,” SIAM J. on Algebraic and Discrete Methods, to appear.
3. “Orientability of Matroids,”;Bland;J. Combinatorial Theory, Ser. B,1977
4. “Eüler's Relation, Möbius Functions, and Matroid Identities,”;Cordovil;Geometriae Dedicata,1982
5. “Topology of Oriented Matroids,” Abstract 758-05-9;Edmonds;Notices Amer. Math. Soc.,1978