Some Semicontinuity Theorems for Convex Polytopes and Cell-complexes.
A measure of asymmetry for convex surfaces
Nerves of Simplicial Complexes (Short Communication)
The perimeter f Minkowski unit discs
On some properties of convex sets
Über zwei Probleme bezüglich konvexer Körper von P. Erdös und von V. L. Klee.
On a Coloring Problem.
On inscribing and circumscribing hexagons
Aperiodic Tiles.
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