On minimal logarithmic signatures of finite groups.
On the Existence of an Infinite Family of Simple 5-Designs.
Plans projectifs d'ordre 16 ayant un groupe de Frobenius d'ordre.
Eine Kennzeichnung der endlichen einfachen Gruppe von Janko durch eine 2-lokale Untergruppe
On Projective Planes of Order Twelve and Twenty.
Projective planes of order 12 do not have a non-abelian group of order 6 as a collineation group.
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