TY  - RPRT
TI  - Perception.
AU  - K von Fieandt
AU  - M Wertheimer
PY  - 1969
DO  - 10.1146/annurev.ps.20.020169.001111
UR  - https://pubmed.ncbi.nlm.nih.gov/4888621/
ID  - 4888621
ER  -