@misc{indiciae535c64f4bd31,
  title = {A simple gigacycle correlator},
  author = {Alexeff, I. and Neidigh, R. V. and Wing, W. R.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700039950},
  note = {Source identifier: 19700039950}
}