@misc{indiciaeb713e5fc99fb,
  title = {Intercombination oscillator strengths in the helium sequence.},
  author = {Dalgarno, A. and Drake, G. W. F.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690060182},
  note = {Source identifier: 19690060182}
}