@misc{indiciaeee2d70cae08e,
  title = {Mapping sub-tropical vegetation using multi-frequency, multi-polarization SAR data},
  author = {Freeman, A. and Durden, S. and Zimmerman, R.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930064018},
  note = {Source identifier: 19930064018}
}