Closed Geodesics on Complete Surfaces.
Manifolds with Geodesic Chords of Constant Length.
Konvexe Mengen in Riemannschen Mannigfaltigkeiten.
On the Lengths of Closed Geodesics on Almost Round Spheres.
Über die Approximation von lokal konvexen Mengen.
Geodesics and Totally Convex Sets on Surfaces.
On the existence of escaping geodesics.
Analytische Eigenschaften konvexer Funktionen auf Riemannschen Mannigfaltigkeiten.
Total curvature and the topology of complete surfaces
Trapping quasiminimizing submanifolds in spaces of negative curvature.
Page 1