Hawking Radiation via Gravitational Anomalies in Non-spherical   Topologies
  We study the method of calculating the Hawking radiation via gravitational anomalies in gravitational backgrounds of constant negative curvature. We apply the method to topological black holes and also to topological black holes conformally coupled to a scalar field. 
Eleftherios Papantonopoulos and Petros Skamagoulis