TY  - RPRT
TI  - An electromagnetic formulation for treating optical reflections from graded-material surfaces 
AU  - Lieberman, A George
PY  - 1982
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS TN 1171
DO  - 10.6028/NBS.TN.1171
ER  -