TY  - RPRT
TI  - Surface perception in pictures.
AU  - J J Koenderink
AU  - A J van Doorn
AU  - A M Kappers
PY  - 1992
DO  - 10.3758/bf03206710
UR  - https://pubmed.ncbi.nlm.nih.gov/1437481/
ID  - 1437481
ER  -