On flocks of infinite quadratic cones.
On groups with root system of type .
On Incidence Matrices of Finite Projective and Affine Spaces.
On Involutorial Elations of Projective Planes.
On -chordal polygons.
On Mathon's construction of maximal arcs in Desarguesian planes.
On M.D.S. codes, arcs in PG(n,q) with q even, and a solution of three fundamental problems of B. Segre.
On median point of the system of elements of -structure
On minimum size blocking sets of external lines to a quadric in .
On multiple nuclei and a conjecture of Lunelli and Sce.
On Norm Three Vectors in Integral Euclidean Lattices. I.
On one construction of all quasifields of order 9
On optimal linear codes over .
On ovoids of .
On Planes of Lenz-Barlotti Class I 6 and Planes of Lenz Class III.
On projective planes of order 20
On Projective Planes of Order Twelve and Twenty.
On -clan geometry, .
On rank 2 geometries of the Mathieu group .
On Rank 3 Projective Designs.