Growth of discrete groups of isometries in negative curvature: a gap-property

Gérard Besson; Gilles Courtois; Sylvestre Gallot

Comptes Rendus. Mathématique, Volume 341 (2005) no. 9 p. 567-572

Hyperbolic manifolds, amalgamated products and critical exponents

Gérard Besson; Gilles Courtois; Sylvestre Gallot

Comptes Rendus. Mathématique, Volume 336 (2003) no. 3 p. 257-261