@misc{indiciae9ccbc9c8cb8d,
  title = {Topographic mapping using a monopulse SAR system},
  author = {Zink, M. and Oettl, H. and Freeman, A.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940015944},
  note = {Source identifier: 19940015944}
}