@misc{indiciaeb214b05c9766,
  title = {Retrieval of Surface Directional Reflectance and Hemispherical Albedo Using Multi-Angular Measurements},
  author = {Martonchik, John V. and Danielson, Eric D. and Diner, David J. and Bruegge, Carol J.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/20060039010},
  note = {Source identifier: 20060039010}
}