An algebraic group associated to an ergodic diffeomorphism Robert J. Zimmer — 1981 Compositio Mathematica
Ergodic theory, semisimple Lie groups and foliations by manifolds of negative curvature Robert J. Zimmer — 1982 Publications Mathématiques de l'IHÉS
Lattices in semisimple groups and distal geometric structures. Robert J. Zimmer — 1985 Inventiones mathematicae
On the automorphism group of a compact Lorentz manifold and other geometric. Robert J. Zimmer — 1986 Inventiones mathematicae
Unitary spectum and the fundamental group for actions of semisimple Lie groups. Robert J. Zimmer — 1990 Mathematische Annalen
On the algebraic hull of an automorphism group of a principal bundle. Robert J. Zimmer — 1990 Commentarii mathematici Helvetici
Induced and amenable ergodic actions of Lie groups Robert J. Zimmer — 1978 Annales scientifiques de l'École Normale Supérieure
On discrete subgroups of Lie groups and elliptic geometric structures. Robert J. Zimmer — 1985 Revista Matemática Iberoamericana In this paper we continue the investigation of [7]-[10] concerning the actions of discrete subgroups of Lie groups on compact manifolds.
Rigidity of Furstenberg entropy for semisimple Lie group actions Amos Nevo; Robert J. Zimmer — 2000 Annales scientifiques de l'École Normale Supérieure