@misc{indiciaef45f105f863e,
  title = {ALTKAL: An optimum linear filter for GEOS-3 altimeter data},
  author = {Fang, B. T. and Amann, D. W.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19770025859},
  note = {Source identifier: 19770025859}
}