@misc{indiciae89e7778a8d8e,
  title = {Wheat productivity estimates using LANDSAT data},
  author = {Nalepka, R. F. and Colwell, J. E. and Rice, D. P. and Bresnahan, P. A.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780002591},
  note = {Source identifier: 19780002591}
}