1. Dissections of a plane oval;Alexanderson;Amer. Math. Monthly,1977
2. Simple partitions of space;Alexanderson;Math. Mag.,1978
3. Oriented Matroids;Björner,1993
4. Topology of oriented matroids. Abstract 758-05-9;Edmonds;Notices Amer. Math. Soc.,1978
5. Oriented matroids;Folkman;J. Combin. Theory Ser. B,1978