1. Orientability of matroids;Bland;J. Combin. Theory, Ser.,1978
2. A combinatorial perspective on the Radon convexity theorem;Brylawski;Geometriae Dedicata,1976
3. A combinatorial perspective on the non-Radon partitions;Cordovil;J. Combin. Theory, Ser. A38 (1985), 38-47; erratum, ibid.,1985
4. A problem of McMullen on the projective equivalences of polytopes;Cordovil;Europ. J. combinatorics,1985
5. Radon's theorem revisited, Contributions to Geometry;Eckhoff,1979