TY  - RPRT
TI  - Method and apparatus for testing surface characteristics of a material
AU  - Johnson, David L.
AU  - Kersker, Karl D.
AU  - Richardson, David E.
AU  - Stratton, Troy C.
PY  - 2006
UR  - https://ntrs.nasa.gov/citations/20080008681
ID  - 20080008681
ER  -