@misc{indiciaeb9032acfd02e,
  title = {Spectroscopy with gas lasers.},
  author = {Feld, M. S. and Javan, A. and Parks, J. H. and Schlossberg, H. R.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660046906},
  note = {Source identifier: 19660046906}
}