TY  - RPRT
TI  - Lightness, brightness, and brightness contrast: 2. Reflectance variation.
AU  - L E Arend
AU  - B Spehar
PY  - 1993
DO  - 10.3758/bf03211768
UR  - https://pubmed.ncbi.nlm.nih.gov/8255708/
ID  - 8255708
ER  -