@misc{indiciae96a7601219a5,
  title = {Adaptive tracking notch filter system Patent},
  author = {Borelli, M. T. and Daniels, H. J. and Hosenthien, H. H.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19710013510},
  note = {Source identifier: 19710013510}
}