Quantitative und qualitative Konjunkturindikatoren - Anderson, O. jun.
On collineation groups of projective spaces. I.
On perspectivities of finite projective planes.
Normal Subgroups of Triply-Transitive Permutation Groups of Odd Degree.
On the Classification of the Classical Groups.
On projective and affine planes with transitive collineation groups.
Faithful Orbits of Collineation Groups.
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