@misc{W2019038438,
  author = {R. N. Clark and T. L. Roush},
  title = {Reflectance spectroscopy: Quantitative analysis techniques for remote sensing applications},
  year = {1984},
  howpublished = {Journal of Geophysical Research Atmospheres},
  doi = {https://doi.org/10.1029/jb089ib07p06329}
}