TY  - RPRT
TI  - Structured surface bidirectional reflectance distribution function reciprocity: theory and counterexamples.
AU  - William C Snyder
PY  - 2002
DO  - 10.1364/ao.41.004307
UR  - https://pubmed.ncbi.nlm.nih.gov/12148757/
ID  - 12148757
ER  -