Mesures de Hausdorff de l'ensemble limite de groupes kleiniens   g\'eom\'etriquement finis
  We prove here that the Poincar\'e exponent of a geometrically finite group od isometries of the 3-dimensionnal hyperbolic space coincides with the Hausdorff dimension of its limit set. We also compare the natural measures supported by this set: the Patterson measure and the Hausdorff and packing measures corresponding to the standart jauge. 
Peign\'e Marc
math.DG