TY  - RPRT
TI  - An assessment of the backscatter technique as a means for estimating loss in optical waveguides 
AU  - Danielson, B L
PY  - 1980
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 1018
DO  - 10.6028/NBS.TN.1018
ER  -