TY  - RPRT
TI  - A Quantitative Basis for the Relation between Visual Acuity and Illumination.
AU  - S Hecht
PY  - 1927
DO  - 10.1073/pnas.13.8.569
UR  - https://pubmed.ncbi.nlm.nih.gov/16587224/
ID  - 16587224
ER  -