@misc{indiciae4f1ab51625af,
  title = {Determining density of maize canopy. 2: Airborne multispectral scanner data},
  author = {Stoner, E. R. and Baumgardner, M. F. and Cipra, J. E.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19730007698},
  note = {Source identifier: 19730007698}
}