TY  - RPRT
TI  - Sharp-edged vs. diffuse illusory circles: the effects of varying luminance.
AU  - T E Parks
AU  - W Marks
PY  - 1983
DO  - 10.3758/bf03202835
UR  - https://pubmed.ncbi.nlm.nih.gov/6844108/
ID  - 6844108
ER  -