TY  - RPRT
TI  - Visual structures for achromatic color perceptions.
AU  - H R Flock
AU  - S Nusinowitz
PY  - 1984
DO  - 10.3758/bf03202672
UR  - https://pubmed.ncbi.nlm.nih.gov/6514521/
ID  - 6514521
ER  -