@misc{indiciaeef9cdcea6072,
  title = {Spectral analysis program (SAP). Volume 2: Programmer's manual},
  author = {Houser, G. L. and Thomas, R. C.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730017419},
  note = {Source identifier: 19730017419}
}