@misc{indiciae76c98053bd84,
  title = {Topographic mapping using radar interferometry - Processing techniques},
  author = {Madsen, Soren N. and Zebker, Howard A. and Martin, Jan M.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930054251},
  note = {Source identifier: 19930054251}
}