M. Banados et A. Gomberoff, BLACK-HOLE ENTROPY IN THE CHERN-SIMONS FORMULATION OF (2-DIMENSIONAL GRAVITY(1)), Physical review. D. Particles and fields, 55(10), 1997, pp. 6162-6167
We examine Carlip's derivation of the 2+1 Minkowskian black hole entro
py. A simplified derivation of the boundary action, valid for any valu
e of the level k, is given.