@article{7173,
  author = {David Hummer},
  title = {Expressions for the computer-evaluation of the four kernel functions for line formation with Doppler and Lorentz profiles},
  year = {1981},
  journal = {Journal of Quantitative Spectroscopy and Radiative Transfer},
  volume = {26},
  pages = {187-195},
  month = {Jan-09-1981},
  issn = {00224073},
  doi = {10.1016/0022-4073(81)90112-6},
}