@misc{1171406,
  author = {W C Martin and Romuald Zalubas and Lucy Hagan},
  title = {Atomic energy levels - the rare-earth elements ::the spectra of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetitum},
  year = {1978},
  month = {1978-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.NSRDS.60},
  language = {en},
}