@article{10166,
  author = {M. Lambropoulos and S. Moody and S. Smith and Carl Lineberger},
  title = {Observation of Electric Quadrupole Transitions in Multiphoton Ionization},
  year = {1975},
  journal = {Physical Review Letters},
  volume = {35},
  pages = {159-162},
  month = {Jan-07-1975},
  issn = {0031-9007},
  doi = {10.1103/PhysRevLett.35.159},
}