@misc{139691,
  author = {Yuri Ralchenko and Jeffrey Fuhr and F Jou and William Martin and Larissa Podobedova and Joseph Reader and Jean Sansonetti and Wolfgang Wiese},
  title = {NIST Atomic Spectra Database (2006)},
  year = {2006},
  number = {2},
  month = {2006-01-01},
  publisher = {http://physics.nist.gov/asd3},
  language = {en},
}