@misc{indiciae46e04a4ff947,
  title = {Interferometer},
  author = {Breckinridge, J. B. and Norton, R. H. and Schindler, R. A.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810021425},
  note = {Source identifier: 19810021425}
}