TY  - RPRT
TI  - Lidar-Based Rock-Fall Hazard Characterization of Cliffs
AU  - Brian D. Collins
AU  - Greg M.Stock
PY  - 2012
DO  - 10.1061/9780784412121.309
UR  - https://pubs.usgs.gov/publication/70188860
ID  - 70188860
ER  -