TY  - RPRT
TI  - Retroreflectance MAP service for coefficient of luminous intensity 
AU  - Eckerle, Kenneth L
AU  - Hsia, J J
PY  - 1984
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS SP 671
DO  - 10.6028/NBS.SP.671
ER  -