@misc{indiciaeffc9b379b0be,
  title = {Cloud-Vegetation Interaction: Use of Normalized Difference Cloud Index for Estimation of Cloud Optical Thickness},
  author = {Marshak, A. and Knyazikhint, Y. and Davis, A. and Wiscombe, W. and Pilewskie, P.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/19990116846},
  note = {Source identifier: 19990116846}
}