@misc{indiciae9a464cb46389,
  title = {Lidar-Based Rock-Fall Hazard Characterization of Cliffs},
  author = {Brian D. Collins and Greg M.Stock},
  year = {2012},
  doi = {10.1061/9780784412121.309},
  url = {https://pubs.usgs.gov/publication/70188860},
  note = {Source identifier: 70188860}
}