The radiative transfer equation is solved by the finite-volume method in an axisymmetric two-dimensional geometry with absorbing, emitting, and either isotropically or anisotropically scattering gray medium. Explicit expressions of the coefficients appearing in the discretized angular redistribution term have been determined. These coefficients verify the recursive relation established by Carlson and Lathrop and lead to accurate numerical results. (C) 2003 Elsevier Ltd. All rights reserved.