TY  - RPRT
TI  - Geometrical considerations and nomenclature for reflectance 
AU  - Nicodemus, F E
AU  - Richmond, J C
AU  - Hsia, J J
AU  - Ginsberg, I W
AU  - Limperis, T
PY  - 1977
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS MONO 160
DO  - 10.6028/NBS.MONO.160
ER  -