@misc{indiciaec183b0af3b89,
  title = {Sampling Landsat classifications for crop area estimation},
  author = {Hixson, M. M. and Davis, B. J. and Bauer, M. E.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810062000},
  note = {Source identifier: 19810062000}
}