@misc{indiciaeb27fd4bf4b07,
  title = {Crop classification using airborne radar and LANDSAT data},
  author = {Ulaby, F. T. and Li, R. Y. and Shanmugam, K. S.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19830017853},
  note = {Source identifier: 19830017853}
}