@misc{indiciae019cbbd7fbd2,
  title = {A bibliography of geomorphometry with a topical key to the literature and an introduction to the numerical characterization of topographic form},
  author = {R.J. Pike},
  year = {1993},
  doi = {10.3133/ofr93262b},
  url = {https://pubs.usgs.gov/publication/ofr93262B},
  note = {Source identifier: ofr93262B}
}