@misc{indiciae3cc38d994cb2,
  title = {A Passive Method for Detecting Vegetation Stress from Orbit: Chlorophyll Fluorescence Spectra from Fraunhofer Lines},
  author = {Theisen, Arnold F.},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20040065950},
  note = {Source identifier: 20040065950}
}