@misc{indiciaefe84cd92d406,
  title = {Design of a monopulse SAR system to determine elevation angles},
  author = {Oettl, H. and Zink, M. and Zeller, K. H. and Freeman, A.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930063634},
  note = {Source identifier: 19930063634}
}