@misc{indiciae3427c6881b2d,
  title = {Using the solar elevation angle and radiance conversion to normalize forest spectral signatures},
  author = {Middleton, E. M. and Lu, Y.-C.},
  year = {1984},
  url = {https://ntrs.nasa.gov/citations/19850028090},
  note = {Source identifier: 19850028090}
}