@misc{indiciae4ce9c29ab6e8,
  title = {Contextual classification of multispectral image data},
  author = {Swain, P. H. and Vardeman, S. B. and Tilton, J. C.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19800018217},
  note = {Source identifier: 19800018217}
}