TY  - RPRT
TI  - Barycentric parameterizations for isotropic BRDFs.
AU  - Michael M Stark
AU  - James Arvo
AU  - Brian Smits
DO  - 10.1109/tvcg.2005.26
UR  - https://pubmed.ncbi.nlm.nih.gov/15747636/
ID  - 15747636
ER  -