A Canonical Form for Compact Nonpositively Curved Manifolds Whose Fundamental Groups Have Nontrivial Center. Patrick Eberlein — 1982 Mathematische Annalen
Some Properties of the Fundamental Group of a Fuchsian Manifold. Patrick Eberlein — 1973 Inventiones mathematicae
The Cut Locus of Noncompact Finitely Connected Surfaces Without Conjugate Points Patrick Eberlein — 1976 Commentarii mathematici Helvetici
Geometry of 2 -step nilpotent groups with a left invariant metric Patrick Eberlein — 1994 Annales scientifiques de l'École Normale Supérieure
A differential geometric characterization of symmetric spaces of higher rank Patrick Eberlein; Jens Heber — 1990 Publications Mathématiques de l'IHÉS