@misc{indiciae21c659636b21,
  title = {Comparison of three different methods to merge multiresolution and multispectral data: Landsat TM and SPOT panchromatic},
  author = {P.S. Chavez and S.C. Sides and J.A. Anderson},
  year = {1991},
  url = {https://pubs.usgs.gov/publication/70016614},
  note = {Source identifier: 70016614}
}