@misc{indiciae2271728a8f06,
  title = {Single-Frequency Light from an Argon FM Laser},
  author = {Osterink, L. M. and Targ, R.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670044177},
  note = {Source identifier: 19670044177}
}