@misc{indiciae263be8ec75bc,
  title = {Automated classifications of topography from DEMs by an unsupervised nested-means algorithm and a three-part geometric signature},
  author = {J. Iwahashi and R.J. Pike},
  year = {2007},
  doi = {10.1016/j.geomorph.2006.09.012},
  url = {https://pubs.usgs.gov/publication/70029913},
  note = {Source identifier: 70029913}
}