@misc{148686,
  author = {Jeffrey Fuhr and Alexander Kramida and H Felrice and Karen Olsen and Svetlana Kotochigova},
  title = {NIST Atomic Transition Probability Bibliographic Database (version 8.1).},
  year = {2006},
  month = {2006-01-01},
  publisher = {http://physics.nist.gov/Fvalbib},
  language = {en},
}