@misc{indiciaee25e75e79873,
  title = {Changes of multispectral soil patterns with increasing crop canopy},
  author = {Kristof, S. J. and Baumgardner, M. F.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730007693},
  note = {Source identifier: 19730007693}
}