@misc{indiciae4d575ac8dcea,
  title = {World slope map},
  author = {James G. Moore and R. K. Mark},
  year = {2011},
  doi = {10.1029/eo067i048p01353-01},
  url = {https://pubs.usgs.gov/publication/70207906},
  note = {Source identifier: 70207906}
}