@article{9807,
  author = {J. Monaghan},
  title = {Collective oscillations in many electron atoms. I. Eigenvalues and polarization},
  year = {1973},
  journal = {Australian Journal of Physics},
  volume = {26},
  chapter = {597},
  pages = {597-606},
  url = {http://adsabs.harvard.edu/full/1973AuJPh..26..597M},
  note = {<p>JILA Pub. 990</p>},
}