@misc{140016,
  author = {Alexander Kramida and William Martin and Arlene Musgrove and Karen Olsen and Joseph Reader and Edward Saloman},
  title = {Atomic Energy Levels and Spectra Bibliographic Database},
  year = {2006},
  month = {2006-01-01},
  publisher = {http://physics.nist.gov/Elevbib},
  language = {en},
}