@article{4447,
  author = {D. Hillier},
  title = {An iterative method for the solution of the statistical and radiative equilibrium equations in expanding atmospheres},
  year = {1990},
  journal = {Astronomy and Astrophysics},
  volume = {231},
  pages = {116-124},
  url = {http://adsabs.harvard.edu/full/1990A\%26A...231..116H},
  note = {JILA Pub. 4099},
}