@misc{indiciae6e2a4b3044fb,
  title = {A high resolution, field portable spectrometer},
  author = {Warren, G. L. and Jean, B. R. and Blanchard, A. J. and Walthall, C. L.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19820044095},
  note = {Source identifier: 19820044095}
}