1. [1] Belegradek, Igor Lipschitz precompactness for closed negatively curved manifolds, Proc. Amer. Math. Soc., Tome 127 (1999) no. 4, pp. 1201-1208
2. [2] Cheeger, Jeff Finiteness theorems for Riemannian manifolds, Amer. J. Math., Tome 92 (1970), pp. 61-74
3. [3] Dekimpe, Karel Almost-Bieberbach groups: affine and polynomial structures, Springer-Verlag, Berlin, Lecture Notes in Mathematics, Tome 1639 (1996), pp. x+259
4. [4] Fukaya, Kenji Hausdorff convergence of Riemannian manifolds and its applications, Recent topics in differential and analytic geometry, Academic Press, Boston, MA (Adv. Stud. Pure Math.) Tome 18 (1990), pp. 143-238
5. [5] G. Besson, G.; Courtois, G.; Gallot, S. Un lemme de Margulis sans courbure et ses applications (2003) (Prépublication de l’Institut Fourier 595)