%0 Journal Article
%A Daniel R. Hughes
%T Extensions of designs and groups: projective, symplectic and certain affine groups.
%J Mathematische Zeitschrift
%D 1965
%P 199-205
%V 89
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1965__89_170437/
%F MZ_1965__89_170437