@misc{indiciaeae1ef3fad95a,
  title = {Parallelism maps for optically contacted etalons},
  author = {Killeen, T. L. and Hays, P. B. and Devos, J.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810059406},
  note = {Source identifier: 19810059406}
}