@misc{indiciaec07111697373,
  title = {Spatial averaging errors in creating hemispherical reflectance (albedo) maps from directional reflectance data},
  author = {Kimes, D. S. and Kerber, A. G. and Sellers, P. J.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930060809},
  note = {Source identifier: 19930060809}
}