TY  - RPRT
TI  - An accelerated lambda iteration method for multilevel radiative transfer. I - Non-overlapping lines with background continuum
AU  - Rybicki, G. B.
AU  - Hummer, D. G.
PY  - 1991
UR  - https://ntrs.nasa.gov/citations/19910056349
ID  - 19910056349
ER  -