TY  - RPRT
TI  - A new rotating gradient disk: brightness, flicker, and brightness aftereffects.
AU  - J T Walker
PY  - 1974
DO  - 10.1016/0042-6989(74)90084-4
UR  - https://pubmed.ncbi.nlm.nih.gov/4818693/
ID  - 4818693
ER  -