New results for the degree/diameter problem. - Michael J. Dinneen; Paul R. Hafner (Networks, 1994)

On the graphs of McKay-Miller-Sirán. - Paul R. Hafner (SIROCCO, 2001)

On the Graphs of Hoffman-Singleton and Higman-Sims. - Paul R. Hafner (Electron. J. Comb., 2004)

Geometric realisation of the graphs of McKay-Miller-Sirán. - Paul R. Hafner (J. Comb. Theory B, 2004)