Axial Isometries of Manifolds of Non-Positive Curvature.
On the Dirichlet problem at infinity for manifolds of non-positive curvature (résumé)
On the Dirichlet Problem at Infinity for Manifolds of Nonpositive Curvature.
On the Lengths of Closed Geodesics on Convex Surfaces.
Orbihedra of nonpositive curvature
The Poisson boundary for rank one manifolds and their compact lattices.
Page 1