@misc{indiciae58c26f4b5a00,
  title = {Urban area update procedures using Landsat data},
  author = {Toll, D. L. and Royal, J. A. and Davis, J. B.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810059329},
  note = {Source identifier: 19810059329}
}