@misc{indiciaeab9089724bd5,
  title = {A weighted least-squares approach to temporal NDVI smoothing},
  author = {D. Swets and Bradley C. Reed and James Rowland and S.E. Marko},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/70201050},
  note = {Source identifier: 70201050}
}