@article{9873,
  author = {H. Moos and J. Woodworth},
  title = {Observation of the Forbidden 2^3S1\textrightarrow1^1S0 Spontaneous Emission Line from Helium and Measurement of the Transition Rate},
  year = {1973},
  journal = {Physical Review Letters},
  volume = {30},
  pages = {775-778},
  month = {Jan-04-1973},
  issn = {0031-9007},
  url = {http://link.aps.org/doi/10.1103/PhysRevLett.30.775},
  doi = {10.1103/PhysRevLett.30.775},
}