TY  - RPRT
TI  - Hering's illusion.
AU  - K HOLT-HANSEN
PY  - 1961
DO  - 10.1111/j.2044-8295.1961.tb00796.x
UR  - https://pubmed.ncbi.nlm.nih.gov/13908587/
ID  - 13908587
ER  -