@inbook{10310,
  author = {David Hummer},
  title = {Line Formation in Expanding Atmospheres},
  year = {1976},
  volume = {70},
  number = {International Astronomical Union/Union Astronomique Internationale},
  pages = {281-312},
  publisher = {Springer Netherlands},
  address = {Dordrecht},
  isbn = {978-90-277-0700-0},
  doi = {10.1007/978-94-010-1498-4_35},
}