@misc{indiciae419e56a9a830,
  title = {Phase-Length Optical Phase-Locked-Loop Sensor (PLOPS)},
  author = {Heyman, Joseph S. and Rogawski, Robert S.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19880000407},
  note = {Source identifier: 19880000407}
}