Two-dimensional description of D-dimensional static black holes with   pointlike sources
  We derive two-dimensional (2D) solutions of a generic dilaton gravity model coupled with matter, which describe D-dimensional static black holes with pointlike sources. The equality between the mass M of the D-dimensional gravitational solution and the mass m of the source can be preserved also at the level of the 2D gravity model. 
Mariano Cadoni, Salvatore Mignemi