@misc{indiciae42df1d94df7c,
  title = {Improving Estimates Of Phase Parameters When Amplitude Fluctuates},
  author = {Vilnrotter, V. A. and Brown, D. H. and Hurd, W. J.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890000550},
  note = {Source identifier: 19890000550}
}