A recursive construction of 1-rotational Steiner 2-designs.
A theorem of O'Nan for finite linear spaces
Composing T-designs
Divisible designs admitting a Suzuki group as an automorphism group
Si costruiscono, facendo uso delle rette dei piani di Lüneburg e degli ovali di Tits, due classi di disegni divisibili ipersemplici che ammettono il gruppo di Suzuki ( con ) come gruppo di automorfismi. Inoltre si studiano le strutture ottenute determinandone le orbite di .
Efficient covering designs of the complete graph.
Isometric imbeddings of Euclidean spaces into finite dimensional -spaces
It is shown that imbeds isometrically into provided that n is a prime power plus one, in the complex case. This and similar imbeddings are constructed using elementary techniques from number theory, combinatorics and coding theory. The imbeddings are related to existence of certain cubature formulas in numerical analysis.
Note on Symmetric Designs and Projective Spaces.
Obecné konečné geometrie
On Rank 3 Projective Designs.
On some properties of a class of geometrical figures.
On the Orbits of Collineation Groups.
On the spectrum of resolvable orthogonal arrays invariant under the Klein group K4.
(3) as a symmetric (36, 15, 6)-design
Packing graphs: The packing problem solved.
Tactical decompositions of designs.
The four known biplanes with k=11.
(v, k, ...)-Graphs and Polarities of (v, k, ...)-Designs.