@misc{indiciaeac993b465754,
  title = {Wheat productivity estimates using LANDSAT data},
  author = {Nalepka, R. F. and Colwell, J. and Rice, D. P.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19760019539},
  note = {Source identifier: 19760019539}
}