Proper partial geometries with Singer groups and pseudogeometric partial difference sets.

Ka Hin Leung Siu Lun Ma Bernhard Schmidt Proper partial geometries with Singer groups and pseudogeometric partial difference sets. 147-177 2008 115 J. Comb. Theory, Ser. A 1 http://dx.doi.org/10.1016/j.jcta.2007.05.001 db/journals/jct/jcta115.html#LeungMS08