1. Algebraic Graph Theory;Biggs,1974
2. Geometries originating from certain distance-regular graphs;Cohen,1981
3. An inequality for generalized hexagons;Haemers;Geometriae Dedicata,1981
4. A note on the 3 D4(q) generalized hexagons;Ronan;J. Comb. Theory, Ser A,1980
5. Near n-gons and line systems;Shult;Geometriae Dedicata,1980