@misc{indiciaeac985d1e5d1f,
  title = {High-accuracy hyperspectral ground truth reflectance techniques - field methods, analysis tips, and theoretical considerations},
  author = {Helminger, M. C.},
  year = {2003},
  url = {https://ntrs.nasa.gov/citations/20060028996},
  note = {Source identifier: 20060028996}
}