TY  - RPRT
TI  - The roughness of natural terrain: A planetary and remote sensing perspective
AU  - Michael K. Shepard
AU  - Bruce A. Campbell
AU  - Mark H. Bulmer
AU  - Lisa R. Gaddis
AU  - Tom G. Farr
AU  - Jeffrey J. Plaut
PY  - 2001
DO  - 10.1029/2000je001429
UR  - https://pubs.usgs.gov/publication/70023143
ID  - 70023143
ER  -