@misc{indiciaeff603bc8ef3b,
  title = {Wheat yield forecasts using Landsat data},
  author = {Colwell, J. E. and Rice, D. P. and Nalepka, R. F.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780030967},
  note = {Source identifier: 19780030967}
}