@misc{indiciaeec30509fe9f5,
  title = {Spectral decomposition of the cross-correlation function},
  author = {Bradford, J. W. and Cummings, R. E. and Hinds, W. E. and Peasley, Q. D.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670027548},
  note = {Source identifier: 19670027548}
}