O osmnáctém Hilbertově problému
On Integral Groups. I. The Reducible Case.
On Integral Groups. II. The Irreducible Case.
On Schur-Ostrowski type theorems for group majorizations.
On the connectedness of the locus of real Riemann surfaces.
On the number of facets of three-dimensional Dirichlet stereohedra. II: Non-cubic groups.
On three-dimensional space groups.
Outer automorphism groups of Bieberbach groups.