TY  - RPRT
TI  - When does illusory contour formation depend on contrast polarity?
AU  - Branka Spehar
AU  - Colin W G Clifford
PY  - 2003
DO  - 10.1016/s0042-6989(03)00274-8
UR  - https://pubmed.ncbi.nlm.nih.gov/12831754/
ID  - 12831754
ER  -