@misc{indiciae292250bd4c63,
  title = {Crop classification using airborne radar and Landsat data},
  author = {Ulaby, F. T. and Li, R. Y. and Shanmugan, K. S.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19820037498},
  note = {Source identifier: 19820037498}
}