TY  - RPRT
TI  - Lightness, embeddedness, and contrast.
AU  - H R Flock
PY  - 1972
DO  - 10.2466/pms.1972.35.1.87
UR  - https://pubmed.ncbi.nlm.nih.gov/5054071/
ID  - 5054071
ER  -