@misc{indiciae339375f04c08,
  title = {Constant-Frequency Pulsed Phase-Locked-Loop Measuring Device},
  author = {Yost, William T. and Cantrell, John H. and Kushnick, Peter W.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930000194},
  note = {Source identifier: 19930000194}
}