Another case of the prime power conjecture for finite projective planes.
On Subdesigns of Symmetric Designs.
On Difference Matrices, Resolvable Transversal Designs and Generalized Hadamard Matrices.
Symmetric translation nets.
Einige einfache fahnenhomogene 3-Blockpläne.
Simple quasidoubles of projective planes.
Variations on seven points: An introduction to the scope and methods of coding theory and finite geometries.
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