@article{4444,
  author = {P. Judge},
  title = {On the interpretation of chromospheric emission lines},
  year = {1990},
  journal = {The Astrophysical Journal},
  volume = {348},
  pages = {279},
  month = {Jan-01-1990},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1990ApJ...348..279J},
  doi = {10.1086/168235},
}