@misc{indiciae8c81416cb5bb,
  title = {Signature extension using transformed cluster statistics and related techniques},
  author = {Nalepka, R. F. and Lambeck, P. F. and Rice, D. P.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19770007617},
  note = {Source identifier: 19770007617}
}