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.