@misc{indiciaee17958ad12cf,
  title = {A comparative study of linear and nonlinear edge finding techniques for Landsat multispectral data},
  author = {Robert Shaw and Lynda Sowers and Ellen Sanchez},
  year = {1981},
  url = {https://pubs.usgs.gov/publication/70113227},
  note = {Source identifier: 70113227}
}