@article{4600,
  author = {David Hummer},
  title = {Asymptotic expansions of the kernel functions for line formation with continuous absorption},
  year = {1991},
  journal = {Journal of Quantitative Spectroscopy and Radiative Transfer},
  volume = {45},
  pages = {211-216},
  month = {Jan-04-1991},
  issn = {00224073},
  doi = {10.1016/0022-4073(91)90055-U},
}