Blocking sets which are preserved by transitive collineation groups.
Calcul du rayon de la sphère inscrite dans le tétraèdre
Charakterisierung der kompakten, zusammenhängenden Moufang-Hughes-Ebenen anhand ihrer Kollineationen.
Collineation Groups of Finite Projective Planes Whose Sylow 2-Subgroups Contain at most Three Involutions.
Collineation groups of translation planes of small dimension.
Collineation Groups Whose Order is Prime to the Characteristic.
Collineations and Extensions of Translation Nets.
Collineations of Subiaco and Cherowitzo hyperovals.
Configuration of mutually perspective triangles
Correction to "Collineations of Finite Projective Spaces as Permutations on the Sets of Dual Subspaces".
Cubic extensions of flag-transitive planes. I: Even order.
Dimensions of Hyperplane Spaces over Finite Fields.
Dual codes of projective planes of order 25.
Dualitäten mit zwei Geraden aus absoluten Punkten in projektiven Ebenen.
Ein "affiner" Beweis des Satzes von v. Staudt - Schleiermacher.
Eine neue Klasse endlicher Translationsebenen.
Endliche zyklische Ebenen.
Es gibt keine 4-affine Ebene der Ordnung 4.
Extending arcs: an elementary proof.
Finite geometries, varieties and codes.