1. A characterization of two classes of semi-partial geometries by their parameters;Brouwer;Simon Stevin,1984
2. Une caracte´risation dese´space affins base´e sur la notion de droite;Buekenhout;Math. Z.,1969
3. On the eigenvalues and colourings of graphs;Hoffman,1970
4. A characterization of the association schemes of bilinear forms;Huang;Europ. J. Combin.,1987
5. Partial geometries satisfying the axiom of Pasch;Thas;Simon Stevin,1977