Escape probability methods versus “exact" transfer for modelling the X-ray spectrum of Active Galactic Nuclei and X-ray binariesA.-M. Dumont, S. Collin, F. Paletou, S. Coupé, O. Godet and D. PelatA&A, 407 1 (2003) 13-30DOI: https://doi.org/10.1051/0004-6361:20030890